This is the 16070th most frequent Polish word.
tłuszczu
"Fat" (nutrient or substance).
In this sentence, 'tłuszczu' is used to refer to fat as a cooking ingredient.
Nie używaj zbyt dużo tłuszczu podczas gotowania.
Do not use too much fat while cooking.
Here, 'tłuszczu' refers to dietary fat in a nutritional context.
Zbyt wiele tłuszczu może być szkodliwe dla zdrowia.
Too much fat can be harmful to health.
In this context, 'tłuszczu' is used to describe grease or oil residue on a surface.