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The Golden Ratio For Brewing Coffee

By October 6, 2016 Coffee No Comments

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Ahh yes, the golden ratio. The perfect balance between coffee and water for brewing that perfect cup….

One of the biggest barriers to entry we hear when talking to home brewing beginners is knowing the right coffee to water ratio. Especially if you’re leaving the world of Keurig (bless your soul) or trying to cut back on purchasing your daily cup of coffee, learning a new brew method and experimenting with the right recipe seems daunting – and even a waste of good coffee. So let’s break down everything you need to know for the perfect coffee to water brew ratio.

BREW RATIO

 A brew ratio is simply a guide to help you figure out how much water and coffee you should use for brewing. Here are a few tips to keep in mind when chatting with coffee nerds about brew ratios:

  • Since coffee is 99% water, the larger number in the ratio is always water. We say this because folks will say 18:1 or 1:18 without clarifying which is which, and this can be confusing at first. (Plus when you get into ratios for espresso, it gets more confusing with more concentrated ratios like 1:3).
  • Another key piece of information is remembering that for water, milliliters = grams. So if someone says they are using 20 grams of coffee to 100 milliliters of water, the ratio is 20:100 = 1:5.
  • The average cup in America is 8-12 oz, and 1 oz is approximately 30ml. So for an 8-12 oz cup, you’re looking at 240-360 ml.

SCAA has come out with their golden ratio, which is approx. 18:1 (grams of water for every one gram of coffee). So, therefore they recommend 55 grams of coffee for 1000 ml (grams) of water.

Obviously this golden ratio depends on your brew method, type of coffee, and personal taste preference. We have recommended brew ratios for Duo Coffee Steeper and Stagg Pour-Over System, and they all hover around the 15:1 to 18:1 range.

TESTING THE GOLDEN RATIO

 We wanted to explore our “golden ratio” in a controlled test, and also make it a simple step by step process so you too can test what ratio works best for your palete. Here’s how to figure out your golden ratio:

  1. Choose your range of brew ratios: we went with 20:1 18:1 15:1 and 13:1, which seems to hit a wide range of ratios recommended by various roasters and cafes.
  2. Grab 4 cups or bowls with a wide mouth: Label the bottom of each cup A, B, C and D so you can keep track. (more on this late)
  3. Grind out approx. 30 grams of medium-fine coffee: we used setting 18 on our Virtuoso. Add 5 grams, 5.55 grams, 6.69 grams, and 7.67 grams respectively to each cup. (Make sure you keep track which is which with your labels!)img_2469
  4. Heat your water up just past 200 degress: you want to pour at 200 degrees, so it’s good to go a little over.
  5. Pour 100g of coffee into each cup: let sit for 5 minutes.img_2474
  6. After 5 minutes, keep your timer running but take a spoon and skim the coffee off the top. It should create a layer you’ll need to “crack” off the top. If your coffee is old and has less CO2, the coffee might sink to the bottom.
  7. After getting most of the coffee out, wait until your clock hits 12 minutes to taste. This gives the coffee time to cool so you can taste the entire flavor profile.
  8. Mix up each of the cups so you and your fellow tasters don’t know which is which.

Take a spoon and slurp up each coffee. This will help coat your palete to get a better taste. In a notebook, write down your thoughts on each. Is it too weak, too strong? Is the coffee savory, sweet, fruity, bitter? Try to figure out your favorite. After you’re done tasting, unveil which is which to see what’s your golden ratio.

Obviously you’ll want to tweak this ratio depending on your brew method and taste preferences, but this test will help steer you in the right direction for understanding your palete. (Plus it’s fun to do with friends!)

 

 

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