Standard Starbucks ratio is 1:4 (coffee:water). You can dilute concentrate 1:1 with water, milk, or cream when serving.
Keyword Cold Brew vs Iced Coffee, Copycat Starbucks Cold Brew, Homemade Starbucks Cold Brew, Starbucks Cold Brew Coffee Recipe, Starbucks Cold Brew Concentrate, Starbucks Cold Brew Copycat, Starbucks Cold Brew Menu Drinks, Starbucks Cold Brew Price, Starbucks Cold Brew Ratio, Starbucks Iced Coffee Recipe