What is a pattern of shapes that leaves no room left over?

pattern of shapes which leaves no room left over

Yes, it does not affect anything.

Commonly called the Dregs, a word which can apply to any 'sediment'

First learn grammar/english.Then get some common sense.

goose fat is sensational and shouldn't be thrown away. strain it to remove any impurities, then put it in a jar and keep it in the fridge. great for roasting potatoes and will keep for ages.