This falls under food, and yummy food is needed to maintain (mental) health, and afterwards you will need exercise, so appropriate for all three categories of this topic!
Without further ado, my Father's recipe (he'll turn 73 this upcoming Halloween, bless his soul) for
Swedish Berry Pie:
(I'm making it myself right now, so that's why I'm posting this.)
Ingredients:
4 dl wheat flour
1 dl sugar
175 grams of butter
1 egg yolk
Berries of your choice (I like blueberries).
Sugar for sweetening the filling (to taste)
Potato flour if preferred, to absorb excess berry liquid (optional)
Preparation:
Mix flour, butter and sugar in a bowl into a coarse consistency using a suitable implement, like a wooden ladel or similar. It helps immensely at this stage if you let the butter warm up a bit first, but you people are smart guys and understand such things without it needing to be stated...
Add the egg yolk, and turn the mixture over a couple times to distribute the egg evenly-ish. Knead the dough well using your hands. When ready it will have reached a firm consistency and will be yellowish in color. (You could also use a food processor I guess, but this recipe is older than such modern contraptions, and I don't have one anyway.)
Place the bowl in the fridge to let the dough set and cool off. Meanwhile, get out your best pie pan and coat it with butter, to prevent the pie from sticking. Start heating up the oven to 225 degrees C.
Split off a major part of the dough and form the bottom crust, by rolling or any means you prefer. Place in the pie pan, and add berries. Frozen is fine, I use frozen blueberries that I picked...up at the supermarket.
Sprinkle on some sugar, to taste, and a light dusting of potato flour if preferred. Not too much, or it'll congeal into nasty lumps during the baking process.
Take remainder of dough and roll into multiple finger-thin lengths and form a grid covering the pie. Slather the exposed pie dough with the leftover eggwhite, to give it a nice color during baking.
Bake for 30 mins in the middle of the oven, or until done.
Consumption:
Enjoy hot out of the oven with a nice vanilla custard, or possibly vanilla ice cream or whipped cream.