The reference serving
The recipe calculator begins with 60 ml of cold milk for a 16 fluid ounce iced drink. That is a convenient topping size rather than a universal rule. It works out to 3.75 ml of milk for each fluid ounce of finished drink, so a 12 ounce drink receives a 45 ml starting base and a 24 ounce drink receives 90 ml.
The drink-size slider is deliberately limited to 6–32 ounces. Outside that range, making one very small or very large batch can behave differently because container shape and tool depth change. For unusual serving sizes, calculate a normal batch and divide or repeat it.
How sweetness scales
Light, balanced and sweet begin at one, two and three teaspoons of syrup for a 16 ounce drink. The calculator scales those values with drink size, but that does not mean sweetness must increase mechanically. If the coffee, matcha or chai is already sweetened, the foam should often carry less syrup.
Unsweetened mode always returns zero. Flavor concentration varies between brands, so the displayed amount is a first pour, followed by tasting—not a promise that every syrup will taste equal.
Why timing is only a checkpoint
Each tool has a simple starting time. The milk selection adds a small adjustment when the formulation is likely to need more work. Those seconds are not a completion detector: temperature, batch size, motor speed and container width can all matter more than the timer.
Stop based on visible texture. A useful foam should look even and glossy and should still move when the container is tilted. If it becomes dry, clumpy or stiff, continuing to match the timer makes the result worse.
What you still need to judge
Milk brands vary, and the calculator cannot account for your exact carton, starting temperature or container shape. Treat the result as the first batch, then adjust from what you see.
If the foam misses the mark, use the failure diagnosis tool and change one thing at a time. Keep the serving size stable while changing milk, syrup or technique so you can tell what helped.
QUICK ANSWERS
Frequently asked questions
Are the amounts exact?
No. Use them for the first batch, then adjust for your milk, glass and preferred foam layer.
Why does the calculator use 60 ml?
It is a convenient one-serving baseline for a 16 ounce iced drink and scales cleanly to common cup sizes.
Should I always froth for the displayed time?
No. Treat it as a checkpoint and stop when the foam is glossy and pourable.
Build a recipe for your cup.
Choose a cup size, milk and sweetness to get the amounts and first texture cue.