The Brew Times

How to Brew Coffee Beer at Home

If you're a coffee drinker and a homebrewer, this one's for you. There's something magical about blending two of life's best beverages—coffee and beer. When done right, coffee beer is rich, complex, and layered, with that familiar roasty aroma that wakes up your taste buds in every sip. Luckily, brewing coffee beer at home isn't complicated—it just requires a little knowledge, some experimentation, and high-quality ingredients. Let's walk through everything you need to know to make your own coffee beer at home, from choosing beans to brewing techniques and flavor balance. Choosing the Right Coffee for Your Beer Your coffee choice sets the tone for the flavor of your brew. Different roasts and origins can change how your beer tastes and smells. Dark Roast: Think bold, chocolatey, and roasty. Perfect for porters, stouts, and darker ales. Expect flavors like cocoa, espresso, and roasted nuts. Medium Roast: Balanced, with notes of caramel, toffee, and a touch of nuttiness. Excellent for amber ales or brown ales. Light Roast: Bright, fruity, and aromatic. Great for experimental beers where you want a subtle coffee character. If you're new to brewing with coffee, start simple: pick a bean you enjoy drinking. Then, tweak from there based on your taste preferences. When to Add Coffee: Hot vs. Cold One of the biggest decisions you'll make when brewing a coffee beer is when to add the coffee. The timing dramatically affects flavor, aroma, and bitterness. Hot (Before Fermentation) This method is straightforward and gives a deep, roasted coffee flavor, though it can bring a bit of bitterness if overdone. Here's how to do it: Coarsely grind your coffee beans. Place them in muslin bags or a hop sack—double them up to prevent grounds from escaping. Steep the bags in your hot wort right after the boil. Steep for no more than 2-3 minutes. Remove the coffee, chill your wort, and transfer to your fermenter. The key here is short contact time. Steeping too long pulls out harsh tannins, leading to an unpleasant, astringent flavor. If you want more coffee character, use more beans, not more time. Start with around ½ pound of coffee per batch as a baseline. Cold (After Fermentation) Adding coffee after fermentation gives you more control over flavor and avoids harshness. There are a few popular methods: 1. Cold Brew Coffee Make a batch of cold brew by steeping coarsely ground coffee in cold water overnight. Strain, then add the cold brew directly into your fermenter. Smooth and rich, with very little astringency. Ideal for lighter beers where you want a clean coffee flavor. 2. Dry Beaning Think of it like "dry hopping," but with coffee beans. Add whole or crushed beans to your fermenter in a hop bag. Sample daily until the flavor is right (usually 25-72 hours). Remove the beans once you're happy with the taste. 3. Coffee Tincture For a quick, clean addition, make a tincture by soaking crushed coffee beans in vodka for about a week and then strain out the beans before adding the desired amount to the fermenter or bottles. Adds a clean, coffee-forward aroma without introducing grounds or water. Great for subtle adjustments before bottling. Dialing in Your Coffee Character There's no strict formula for the perfect coffee beer—it's all about balance. A few tips to keep in mind: Taste test frequently. If you're using beans in the fermenter, sample every day or two. Start small. You can always add more coffee flavor, but it's hard to take it away. Brewer's Notes & Troubleshooting Here are a few common issues (and how to avoid them): Over-bitterness: Caused by over-steeping or using finely ground beans. Stick with coarse grinds and short steep times. Flat or oily: Natural coffee oils can reduce foam. Use malts with higher protein levels (like crystal or wheat) to help. Stale flavor: Always use freshly roasted beans, and store them in an airtight container. Brewing coffee beer is all about fine-tuning these details over a few batches. Try These Mr. Beer Coffee Beer Recipes Ready to put your new coffee brewing skills to the test? Mr. Beer has a few recipes that showcase just how versatile (and delicious) coffee can be in your homebrews. A Darker Shade of Blonde Stout This isn't your usual stout. Close your eyes and take a sip, and you'll taste the smooth maltiness, chocolate, and coffee you'd expect from a dark beer— then open your eyes to find a golden ale. Sunday Morning Coming Down Coffee Stout Coffee in your beer? Absolutely. This one pairs a lush Irish Stout with strong espresso for a dark, roasty, slightly chocolatey brew that'll perk up any morning (or night). Breakfast Pig Porter Just as the name says, bacon, maple, coffee, what more could you want for breakfast? How about all that in a beer? Yes, we took real bacon, put it into a beer, and magic happened. HO HO-HAZELNUT Imperial Stout Chocolate malts, hazelnut coffee, and coconut combine to make this imperial stout worthy of Santa himself. Have Fun Experimenting Brewing coffee beer at home is a rewarding experiment that blends creativity with craftsmanship. No matter what you're brewing, the key is balance, patience, and a willingness to play around with methods. So grab your favorite roast, fire up your Mr. Beer kit, and start brewing something delicious.