My greenhouse is full of junk food, sugar ladened and delicious. Pretty hot on fructose too. These are gustatory recreation, not food. Going to live dangerously for a few weeks!
The weeds below are growing in an untended border outside my son's nursery. The unripe fruits are as big as they are going to get, though they too will go red and delicous in a week or so. They appear to be food, certainly better than starvation if hunting is bad. How long would it take to gather enough to keep yourself out of ketosis for a day?
I don't think many hunter gatherers had greenhouses or ate strawberries!