Point at the top of your coffee. It reads the color and calls it.
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Start the camera, or upload a photo of your cup from above.
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blacksplashmilkymostly milk
Measurements
For a reliable read: shoot straight down in even light, no glare on the surface.
Then switch to Tap white rim and tap the white edge of your mug — that calibrates
for the lighting and makes the verdict far more trustworthy.