Leftovers?! What are leftovers?!
I get all snarky about those threads too - of course you can buy less food if you are feeding two toddlers than if you are feeding the equivalent of 4 adults plus a toddler, then add on three times as much again as three of those adult portions are for hungry, growing teens / pretend who are hitting puberty early...
DS2 is just over 10yo, 5ft1, and growing quickly. DS1 is coming up for 12yo, 5ft3, and also growing quickly. DD is almost 16, 5ft8, and still bloody growing (her dad is 6ft5...), and eats cheese like it's air...
(DD came in, was there for two hours, and managed to eat three fajitas overfilled with chicken, peppers, lettuce and salsa, AND half a HUGE block of cheese...)