Rice is ok over wood fires but needs too much of carried fuel.
In my experience the washing up is the lowest problem if noodles are cooked in a big amount of salt water.
Such a noodle soup is exactly what the body needs and I tend to eat cheese and sausage separately to keep the fat away from the pot.
Afterwards you can simply dry and polish your pot with toilet paper inside and it's done.
I admit that this can become pretty boring if one is on a several weeks hiking tour but for short trips that's simply the best for hiking.
In a static camp with water source you can do of course a lot more. And also if there are streams and lakes in the area.
Apples I pick on the way in autum. I pick just one and eat it immediatly.
I do not steal half the tree and throw them away 800 steps later because my rucksack is overloaded. I just steal one, and if I am able to ask the owner I take not more than three of them.
No experianced hiker would put them into his rucksack. That's a juice in a bad container, no food!
And a banana in the rucksack would be a provoked disaster!
Such city food simply doesn't belong into a hiking equipment, and NO, we also do not carry yoghurt and tofu around.
We carry hard cheese, hard sausage like salami, dried meet, bread, noodles, dehydrated sauces and soups, salt and pepper, dried fruits, nuts and muesli, muesli bars, cookies perhaps,
In cold conditions chocolate, some carry a bit sugar, some carry olive oil or something similar. And that's it!
No kiwis, no bananas, no potatoes, no ananas, no potato chips, no marshmallows or whatever.
Beginners might do that, experienced people don't do that.
Bushcrafters know the wild salads, they know the berries and other edible plants and get vitamins like that. They don't buy green salad in a supermarket and stuff it into the rucksack.
And for just a week green plants are not necessary anyway.