For my daily vegetable intake, I would need to forage about 250 grams a day, which is not possible here in the Netherlands. We live in dense cities and foraging that amount of food is not possible and sustainable. I think the goal is not to replace daily food with foraging, foraging for me means more knowing the plants and enjoying the nature. This can be a small addition to your salad, a tea, some flavour to a dish or a small jar of jam from rose hips.
Foraging, Growing and Using Herbs in Cities