Back then I had 3 high school age kids. 2 boys and a girl. All three could inhale the groceries.
I hear that! I had 3 teen boys and a moocher BIL under my roof at one point in time.
And then I would remember my MIL, who raised 14 kids, tell me:
“On Monday I would go the the day-old bakery store and buy 14 loaves of bread. Then on Tuesday I would go to the discount dairy and buy 14 gallons of milk...”
They had chickens for eggs and a beef steer for meat.
I managed to keep us all fed and clothed with a BIG garden, a flock of chickens and we hunted and fished. And this was in the 90’s when doing this stuff was not the least. bit. cool. ;)