These three things are:

1)4 canned candied fruit (the last recipe in the kitchen can be: 1 mushroom+1 nut).

2) Four books (just go to town by car, and 250 yuan will buy one).

3) 1 pot of fish soup (also made in the kitchen, you can hang a fish+1 potato, and potatoes can be bought by car).

When these requirements are met, the task will be checked and then click Finish.