Swap tapioca starch for potato starch in the wrong recipe and you will notice immediately, since one holds up through freezing while the other turns a sauce watery and thin as soon as it eventually cools right back down again.

Bite into a tapioca pearl and you get a slow, chewy resistance that lasts through the whole sip, but bite into popping boba and the entire experience ends almost instantly in one small burst of juice right against your tongue.

Drop both into the same pudding, and most people cannot tell tapioca and sago apart by sight alone, yet one comes from a tropical root crop, while the other comes literally from the trunk of an entirely different palm tree.

Add tapioca starch to a lemon curd and it holds up fine, but swap in arrowroot and the acid barely touches its thickening power, a small difference that decides if your dessert turns out somewhat glossy or falls apart completely.

Freeze a cornstarch-thickened sauce and it turns watery and grainy the moment it thaws, but do the same with a tapioca-thickened sauce and it comes out of the freezer looking exactly like it did the very day you made it.

Cassava and tapioca get mixed up constantly, yet one is a fibrous root vegetable you can boil and eat whole, while the other is a nearly pure starch left behind once nearly everything else has already been entirely washed away.

Bite into a tapioca pearl that feels like a pebble, or watch one dissolve into mush the very second it hits your tongue, and you already know something specific went wrong long before that pearl ever reached your own glass.