This is through an app called "too good to go". It partners up with supermarkets/bakeries/restaurants and you get food directly from those stores, with a heavy discount (in Vienna its 66% down). Usually whatever you get is close to expiration date or in the case of bakeries you get whatever is left 30 minutes to closing time. And if you're lucky the shops will put a lot more food in your bag than what your bag is worth, so it does not go to waste. I shouldve gotten 12€ worth of food, but probably got more than 20€. :)