There is a setting in the “Reminders” app where Siri will automatically categorize your reminders into certain categories. If you have a shopping list and you add chickpeas and red beans for example it might put them into a category of “pulses and grains”. I think the idea is you probably buy all the things in a particular category from the same kind of store (or the same section of a supermarket or whatever).

For me yesterday I needed to buy dishwasher rinse aid so when I added it to my shopping list siri put it into the “beverages” category, and when my wife on a different occasion asked me to buy some makeup remover for her siri put that into a “condiments” section.

I have not done anything (on purpose) to make the classification like this by mistraining it or whatever - it’s just been that bad out of the box.

Dishwasher rinse aid - the tablets you put into the machine containing chemicals

Beverage - another word for drink

Makeup remover - for women

Condiments - something added to food to enhance its flavor

iOS tries to put shopping list items into AI named groups but doesn't seem to understand what objects actually are so it makes mistakes.