Oh, raspberry milkshakes, how I love you. I have tried and tested this recipe over many many summers and in different variations. With and without banana (without is definitely more refreshing), with honey or powdered sugar, with lemon juice or lime juice. This is probably not the last version of my favourite milkshake, but it's definitely the best I have found so far.
PS: If Quark isn't available in your country, full fat yoghurt works as well. —Hanna
Since this is a shake, there aren't too many instructions! Just add everything to your mixer and enjoy. This is a really thick milkshake, so if you prefer it a little bit more 'drinkable', just add more milk or water.