--- product_id: 261470706 title: "Rainbow Mountain" brand: "boss" price: "£77.88" currency: GBP in_stock: true category: "Boss" url: https://www.desertcart.co.uk/products/261470706-rainbow-mountain store_origin: GB region: United Kingdom --- # 110mg caffeine per 6oz can Rainbow Mountain Blend from 7 regions Authentic Japanese origin Rainbow Mountain **Brand:** boss **Price:** £77.88 **Availability:** ✅ In Stock ## Summary > 🌟 Sip the iconic Japanese doubleshot that’s redefining your coffee break! ## Quick Answers - **What is this?** Rainbow Mountain by boss - **How much does it cost?** £77.88 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/261470706-rainbow-mountain) ## 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 - • **Gluten-Free & Smooth:** Contains milk and sugar for a creamy finish, with zero gluten for mindful sipping - • **Doubleshot Espresso Power:** 110mg naturally brewed caffeine in a sleek 6oz can for on-the-go energy ☕ - • **Ready-to-Drink Convenience:** Perfectly portioned, portable, and no prep needed—coffee culture in your pocket - • **Premium Rainbow Mountain Blend:** Expertly crafted from 7 Guatemalan regions for a unique, layered flavor 🌈 - • **Japan’s #1 Canned Coffee Brand:** Trusted for 30+ years, dominating vending machines nationwide 🇯🇵 ## Overview BOSS Coffee by Suntory’s Rainbow Mountain Blend is Japan’s top canned coffee, now imported to the US. This 6oz ready-to-drink espresso doubleshot delivers 110mg of naturally brewed caffeine, crafted from beans sourced across seven Guatemalan regions. With a smooth, lightly sweetened milk blend and gluten-free formula, it’s the perfect premium pick-me-up for busy professionals craving authentic Japanese coffee culture anytime, anywhere. ## Description desertcart.com: 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 : Grocery & Gourmet Food ## 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 | | ASIN | B08L4KNBV6 | | Age Range Description | 18+ | | Allergen Information | Milk | | Best Sellers Rank | #25,859 in Grocery & Gourmet Food ( See Top 100 in Grocery & Gourmet Food ) #31 in Ready to Drink Liquid Coffee | | 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 4.6 out of 5 stars (1,123) | | 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 | 6 ounces | | Liquid Contents Description | Coffee | | Manufacturer | Suntory B&F N.A. | | Manufacturer | Suntory B&F N.A. | | Number of Items | 12 | | Product Dimensions | 2.08 x 2.08 x 4.13 inches; 6 ounces | | Region of Origin | Japan | | Size | 6 Fl Oz (Pack of 12) | | Special Ingredients | Milk, Sugar | | Specialty | Flash Brew | | Sweetness Description | sweet | | UPC | 088857019949 | | UPC | 088857019949 | | Unit Count | 72.0 Fluid Ounces | | Units | 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 ![Rainbow Mountain - Image 1](https://m.media-amazon.com/images/I/819RtFl76DL.jpg) ![Rainbow Mountain - Image 2](https://m.media-amazon.com/images/I/71deT6EIF-L.jpg) ![Rainbow Mountain - Image 3](https://m.media-amazon.com/images/I/81yIgE20EoL.jpg) ![Rainbow Mountain - Image 4](https://m.media-amazon.com/images/I/91nd81PnoLL.jpg) ![Rainbow Mountain - 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 ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/261470706-rainbow-mountain](https://www.desertcart.co.uk/products/261470706-rainbow-mountain) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-08-02*