Mix 250 g low-fat quark, 350 ml skimmed milk, 2 dashes of lemon juice and 2 dashes of liquid sweetener in a container.
A shake contains on average:
290 kilocalories, 42 g protein, 0.8 g fat, of which 0.4 g saturated fatty acids, 27.1 g carbohydrates of which 27 g milk sugar (lactose), 0.27 g sodium.