Graduated disposable mixing cups with printed ounce, milliliter and ratio markings up the side. The ratio scales are the reason to use them: you read the line instead of doing arithmetic with a cheap cup and a Sharpie, which is where most bad batches start.
Four sizes: pint, 1 quart, 2.5 quart and 5 quart, so you can match the cup to the
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These cups are handy, easy to measure accurate mixes in, and can be recycled when empty