Hell I figured I eat about one onion a week, and one whole garlic bulb. I planted 75 onions and 40 garlic bulbs expecting that that would keep me going for a year.

Not even close. Between some of them dying, many of them producing tiny output, and the difficulty of keeping them stored I exhausted my harvest in about four months.

I have a small patch of land, 10m x 10m, and I grow potatoes, garlic, cucumbers, and similar things. But I quickly realized I would never become self-sufficient, not unless I dedicated the whole patch of land to 100% potatoes, which would be far less fun and start to feel like work.