Troubleshooting
Ten things that go wrong, and why
Each page starts with the complaint as a person would say it, gives an answer short enough to use immediately, and then works through the causes — with a way to confirm which one you have before you change anything.
“My ice comes out cloudy and white in the middle”
The white core is dissolved air and minerals, not dirt, and it collects wherever the water freezes last. In an open tray that is the middle, because the cube is freezing from all six sides at once. Force it to freeze from one direction only and the cloudiness gets pushed somewhere you can pour away.
Fix it“The drink tastes fine for a minute, then goes watery”
Something in the glass is spending ice that should have been spent in the refrigerator. In almost every case it is the base going in warm, the glass being warm, or too few cubes rattling around in a lot of empty space. All three are free to fix and none of them involves changing the recipe.
Fix it“My cold foam falls flat before I finish the drink”
Foam is air held in a network of fat and protein, and that network only holds when the fat is cold and firm. Nearly every collapse traces back to temperature, to low-fat dairy that has nothing to build the network with, or to whipping past the point where the structure starts breaking down again.
Fix it“Matcha clumps and leaves grit at the bottom”
Matcha is a suspension of ground leaf rather than a solution, so it never truly dissolves — it has to be broken up and held in the liquid. Clumps almost always mean the powder met cold liquid before it was wetted properly, or that it went into the cup already compacted from the tin.
Fix it“The citrus peel makes the drink taste bitter”
The aroma you want lives in the colored outer skin. Immediately underneath it is the white pith, which carries no aroma at all and a great deal of bitterness. Bitter citrus is nearly always pith that came along with the peel, or a peel left in the glass long enough for its cut edges to leach.
Fix it“Cold glasses keep leaving rings on the furniture”
A cold glass pulls moisture out of the air onto its own outside, and that water runs down and pools under the base. On a sealed counter it is nothing; on a wooden table it lifts the finish, and the mark is permanent well before anyone notices it forming. The fix is a coaster that takes the water away rather than one that merely intercepts it.
Fix it“The straw collapses or clogs in a thick drink”
Suction through a tube is limited by how thick the liquid is and how wide the bore is. Pull hard enough on a narrow straw in a thick drink and the pressure difference flattens the straw itself. The answer is bore size, not effort — around 0.4 in for anything blended, against roughly 0.23 in for a standard straw.
Fix it“To-go lids leak and the cups sweat all over everything”
Two separate problems that get blamed on each other. Leaks are usually a lid that was never seated properly or a cup wall soft enough to deform when gripped. Sweating is condensation, which is normal physics and can only be managed rather than eliminated.
Fix it“My syrup turns grainy or grows crystals in the jar”
Sugar stays in solution only up to a point, and past that it comes back out as crystals. The usual cause is boiling, which evaporates water and pushes the concentration higher than you intended. Once a few crystals form they act as seeds and the rest follows quickly.
Fix it“A batch that tasted great at noon tastes flat by evening”
Different parts of a batch age at different speeds, and the fastest one sets the clock. Citrus juice dulls within hours, carbonation is gone in about twenty minutes, and ice added to the container quietly rewrites the ratio all afternoon. What went flat is usually one component rather than the whole thing.
Fix it