Do you need a second plate for second course, or can you wipe the crumbs from the first?
do you need to rinse if your dishwasher is good enough?
Do you need to buy washed potatoes or are you lazy?
do you need to wash your potatoes if your peeling them?
Do you need to wash your lettuce if you grew it?
do you need to buy parsley if you've got an empty pot by your door?
Do you need to throw away the pasta water or could your lemon tree use it?
do you need to use a different knife and cutting board if you cut your vegetables before your meat?
Do you need to put your leftovers in a container or can the dish you cooked it in cool down and go straight in the fridge?