---
product_id: 261470706
title: "BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten"
brand: "boss"
price: "฿6087"
currency: THB
in_stock: true
reviews_count: 8
category: "Boss"
url: https://www.desertcart.co.th/products/261470706-boss-coffee-by-suntory-rainbow-mountain-blend-japanese-flash-brew
store_origin: TH
region: Thailand
---

# 110mg caffeine - espresso doubleshot power 7-region Rainbow Mountain bean blend 6oz portable ready-to-drink can BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten

**Brand:** boss
**Price:** ฿6087
**Availability:** ✅ In Stock

## Summary

> 🌟 Sip the cult-favorite Japanese espresso that’s redefining your coffee break!

## Quick Answers

- **What is this?** BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten by boss
- **How much does it cost?** ฿6087 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/261470706-boss-coffee-by-suntory-rainbow-mountain-blend-japanese-flash-brew)

## Best For

- boss enthusiasts

## Why This Product

- Trusted boss brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Low-Calorie Sweetness:** Only 70 calories with a smooth milk and sugar blend—indulgence without guilt.
- • **On-the-Go Convenience:** Compact 6oz cans fit perfectly in your bag or pocket for instant premium coffee anywhere.
- • **Espresso Doubleshot Energy:** 110mg naturally brewed caffeine fuels your hustle without the crash.
- • **Exotic Rainbow Mountain Blend:** Expertly crafted from 7 Guatemalan regions for a uniquely balanced flavor profile.
- • **Authentic Japanese Craftsmanship:** Imported straight from Japan, delivering the #1 canned coffee experience loved nationwide.

## Overview

BOSS Coffee by Suntory’s Rainbow Mountain Blend is a premium, ready-to-drink canned coffee imported from Japan. Featuring a light roast from seven Guatemalan coffee regions, it delivers 110mg of caffeine—the equivalent of a doubleshot espresso—in a convenient 6oz can. With 70 calories, milk, and no gluten, it’s the perfect low-calorie pick-me-up embraced by coffee lovers worldwide.

## Description

Product description The Perfect Blend of 7 Premium Guatemalan Beans BOSS RAINBOW MOUNTAIN BLEND is created using premium beans selected from 7 growing regions managed by members of the Guatemalan National Coffee Association, Anacafé. Each region has a different climate producing beans with unique characteristics. Selected Growing Regions Acatenango Valley Antigua Coffee Traditional Atitlan Fraijanes Plateau Highland Huehue New Oriente Volcanic San Marcos Straight From Japan Answering to the requests for RAINBOW MOUNTAIN BLEND from BOSS US fans, Suntory brings you the same great flavor and packaging as in Japan. Rainbow Mountain Blend This flagship coffee blend is made by expertly combining beans from 7 selected Guatemalan growing regions, with each bean bringing a unique addition to this perfectly balanced coffee. Proven Quality By Suntory BOSS Coffee started its history in 1992 in Japan. At Suntory, we have been developing Ready-To-Drink (RTD) coffee for over 30 years, now it’s time for you to enjoy it. The Flash Brew Difference The flash brew difference in one word: Flavor. Coffee beans are finely ground and brewed hot. Flavor is released, then trapped in a flash of ice. All to deliver one perfect can of BOSS Coffee.

Review: My favorite beverage on the face of the earth - Was never a coffee person until I went to Japan. I’ve tried Starbucks, Dunkin, local coffee houses near me, and sure I like a hot chocolate every now and then, but never could I get into coffee. The bitterness was always too much. But then I went to Japan, and tried this canned coffee at the recommendation of a friend who bought it at FamilyMart on a whim. Immediately, my life transformed before my very eyes. I became buff. Women threw themselves at me. All of my problems solved themselves. I got my dream job. I became rich. I was no longer mentally ill. And most importantly of all, I found a coffee I actually liked. It’s got just the right blend of sweet and bitter that doesn’t make me want to spit it out immediately. I love this coffee so much I make a 6oz can last 2-3 hours. Any quicker would be sacrilege. It’s a shame it costs so much money but the financial burden is worth it to me, because it’s a nice little treat in the morning which also helps curb my body’s apparent constant need for sugar (only 20% DV? Crazy!!). Don’t go for that crappy canned Starbucks you see at convenience stores, go the extra mile and get BOSS coffee, because it will change your life like it did mine.
Review: My favorite canned coffee drink. - Fantastic coffee! The world would be a better place if this were more widely available and in every flavor like in Japan. Great pick me up. Delicious flavor. Great hot, cold, or room temp. Japan spoiled me with these and now I'm obsessed.

## Features

- NO.1 CANNED COFFEE BRAND IN JAPAN - Conveniently found in vending machines and convenience stores across the country, Suntory has innovated BOSS Coffee for over 30 years to become the no.1 canned coffee brand in Japan (2021, Intage).
- RAINBOW MOUNTAIN BLEND - Using beans sourced from seven grow regions managed by Guatemalan Coffee Association farmers, Suntory’s expert brewers blend the unique flavors produced in diverse climates to create our signature Rainbow Mountain Blend.
- STRAIGHT FROM JAPAN - Due to popular demand from BOSS fans, we are delighted to bring Rainbow Mountain Blend, with the same great packaging and flavor as in Japan, to the US market. Enjoy an authentic taste of Japanese coffee culture.
- READY TO DRINK COFFEE - Rainbow Mountain's 6 fl.oz can is perfect to slip into a pocket or bag and take on-the-go for a high quality coffee pick-me-up anytime, anywhere.
- NATURALLY BREWED CAFFEINE - With only 70 calories and 110mg of naturally brewed caffeine, don't underestimate this handy can size. Rainbow Mountain Blend packs the equivalent of a doubleshot of espresso in every can, more than enough to get you going.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08L4KNBV6 |
| Age Range Description | 18+ |
| Allergen Information | Milk |
| Best Sellers Rank | #25,409 in Grocery & Gourmet Food ( See Top 100 in Grocery & Gourmet Food ) #31 in Ready to Drink Liquid Coffee |
| Brand | BOSS |
| Brand Name | BOSS |
| Caffeine Content Description | Caffeinated |
| Caffeine Content Per Serving | 110 Milligrams |
| Certificate Type | JPPS |
| Coffee Blend Name | Rainbow Mountain Blend |
| Coffee Roast Level | Light Roast |
| Coffee Type | Prepared Coffee Drink |
| Container Type | Can |
| Country as Labeled | Japan |
| Customer Reviews | 4.6 out of 5 stars 1,120 Reviews |
| Diet Type | Gluten Free |
| Flavor | Coffee with milk and sugar |
| Item Dimensions | 2.08 x 2.08 x 4.13 inches |
| Item Form | Liquid |
| Item Package Weight | 2.77 Kilograms |
| Item Type Name | Canned Coffee |
| Item Volume | 2128.8 Milliliters |
| Item Weight | 0.38 Pounds |
| Liquid Contents Description | Coffee |
| Manufacturer | Suntory B&F N.A. |
| Number of Items | 12 |
| Package Information | Can |
| Region of Origin | Japan |
| Roast Level | Light Roast |
| Size | 6 Fl Oz (Pack of 12) |
| Special Ingredients | Milk, Sugar |
| Specialty | Flash Brew |
| Sweetness Description | sweet |
| UPC | 088857019949 |
| Unit Count | 72.0 Fluid Ounces |
| Variety | Rainbow Mountain Blend |

## Product Details

- **Brand:** BOSS
- **Caffeine Content Description:** Caffeinated
- **Flavor:** Coffee with milk and sugar
- **Item Form:** Liquid
- **Roast Level:** Light Roast

## Images

![BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten - Image 1](https://m.media-amazon.com/images/I/819RtFl76DL.jpg)
![BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten - Image 2](https://m.media-amazon.com/images/I/71deT6EIF-L.jpg)
![BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten - Image 3](https://m.media-amazon.com/images/I/81yIgE20EoL.jpg)
![BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten - Image 4](https://m.media-amazon.com/images/I/91nd81PnoLL.jpg)
![BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten - Image 5](https://m.media-amazon.com/images/I/81Td3eGiVnL.jpg)

## Questions & Answers

**Q: Anyone know if this is actually brewed and canned in japan, or is it just the recipe from japan and canned in the us?**
A: Thank you for your interest in BOSS coffee.
All BOSS US products (At Cafe Au Lait, Rainbow Mountain and Black) are brewed and canned in japan.
They are all exported from Japan.
We hope you will enjoy BOSS coffee!

**Q: Do these need to or can be refrigerated?**
A: They do not have to be refrigerated . They taste better hot or cold. I prefer cold.

**Q: Anyone know why only the coffee is sold and not the tea? Tried contacting seller but no luck so posting here in hopes for a reply.**
A: Probably gauging interest in the brand. If you’re in the US, coffee is universally more consumed than tea (I prefer tea). The coffee being available online is relatively new. They also must be experiencing difficulties in the warehouse as there are tons of cans that will arrive dented and damaged while the outer box looks untouched. This appears to be an issue with how the individual cans are packaged as opposed to Amazon delivery methods. So TLDR: give it some time and they might bring tea as well

**Q: Once empty, can these cans be crushed?**
A: If you put enough force into it then yeah, they should be crushable

## Customer Reviews

### ⭐⭐⭐⭐⭐ My favorite beverage on the face of the earth
*by M***N on October 27, 2024*

Was never a coffee person until I went to Japan. I’ve tried Starbucks, Dunkin, local coffee houses near me, and sure I like a hot chocolate every now and then, but never could I get into coffee. The bitterness was always too much. But then I went to Japan, and tried this canned coffee at the recommendation of a friend who bought it at FamilyMart on a whim. Immediately, my life transformed before my very eyes. I became buff. Women threw themselves at me. All of my problems solved themselves. I got my dream job. I became rich. I was no longer mentally ill. And most importantly of all, I found a coffee I actually liked. It’s got just the right blend of sweet and bitter that doesn’t make me want to spit it out immediately. I love this coffee so much I make a 6oz can last 2-3 hours. Any quicker would be sacrilege. It’s a shame it costs so much money but the financial burden is worth it to me, because it’s a nice little treat in the morning which also helps curb my body’s apparent constant need for sugar (only 20% DV? Crazy!!). Don’t go for that crappy canned Starbucks you see at convenience stores, go the extra mile and get BOSS coffee, because it will change your life like it did mine.

### ⭐⭐⭐⭐⭐ My favorite canned coffee drink.
*by O***A on December 2, 2025*

Fantastic coffee! The world would be a better place if this were more widely available and in every flavor like in Japan. Great pick me up. Delicious flavor. Great hot, cold, or room temp. Japan spoiled me with these and now I'm obsessed.

### ⭐⭐⭐⭐⭐ Wow. Where do I even begin?
*by M***N on December 30, 2020*

Let me take you back to October of 2017. I had made my first trip to the wonderful land of Japan and nestled in among the good people who live there. During my stop in Kyushu, I ran across this BOSS Rainbow Mountain Blend coffee at an AEON Mall. At the behest of my friend who I was staying with at the time, I bought some to consume on the spot. It was already chilled, and as soon as the coffee hit my taste buds, I was in for a real treat. I was sure to buy up some more to take home with me on the flight back to America. Don't let the 6 oz size fool you. These little coffees pack a wallop and the taste is phenomenal. Even though I'm not one to get cream or sugar in my coffee (as Brian Griffin says, I like mine black as sin), the combo of everything feels just right. The quality of the roast is quite solid. Consisting of slightly woody notes, with not a sign of burnt flavor, this should appease any coffee snob anywhere. I'm so glad Suntory finally came to their senses and started properly importing this stateside for our enjoyment. The price is certainly higher than your typical Starbucks brew, but this really is a unique experience, almost a rite of passage that everyone should go through, and a good taste of what the Japanese like to call quality coffee. This beverage gets my seal of approval. Even if you find the price a bit too high, I'd still consider getting one case for the novelty factor and, who knows, maybe you'll get hooked? :)

## Frequently Bought Together

- BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten
- BOSS Coffee by Suntory - Japanese Flash Brew Coffee with Milk, 8oz 12 Pack, Imported from Japan, Au Lait, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten
- BOSS Coffee by Suntory - Japanese Flash Brew Original Black Coffee, 8oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Keto Friendly, Vegan, No Sugar, No Dairy

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-06-04*