Are you referring to a garden like this one?.
A garden like that won't sustain a massive variety or quantity of fruits, if that's what you are thinking. You'd need to balance fruit with other plants that support each other, such as nitrogen fixers. I think I've seen number of 40-50 varieties of cultivated plants in these gardens at most, and not most of them being fruit.
You didn't mention where you live in northern europe, but I live in a place that fluctuates between -40C to +40C and am still able to grow using the food forest type principles (not all my garden space uses it, but I have a few tree guilds). I grow berries, cucumbers, squash, apples and tomatoes.
Fruit is not an efficient way to grow calories in terms of space and the inputs it needs, so you are unlikely to be able to find a method of growing enough calories from fruit without intensive industrial agriculture.