Carrots give 10 health and 32 stamina.
Mushrooms give 15 health and 15 stamina.
1 mushroom and 3 carrots, made into soup, gives 15 health and 45 stamina.

Blueberries give 8 health and 25 stamina.
Cooked deer meat gives 35 health and 12 stamina.
1 cooked deer meat, 1 blueberry, and 1 carrot, made into stew, gives 45 health and 15 stamina.

That's a combined total of 60 health and 60 stamina from 2 foods, leaving another food slot for something else. The only single-ingredient foods that even come close are magecap and jotun puffs... from the Mistlands.

Make some boar jerky for your final food slot, and you've got another 23 hp/stam, for a total of 108 health and 133 stamina... and practically never left the Meadows. Using single foods, you can do get one or the other, but cooking up some simple stuff will get you both.

Later foods are even better.

https://valheim.fandom.com/wiki/Food

All you need is to make a cauldron out of some tin, and you've got some amazing food buffs after just dipping your toe into the Black Forest.

Plant your carrots and go do other stuff; the farm doesn't have to be loaded for the carrots to grow.

TL;DR: The juice is definitely worth the squeeze.