Otherwise, mix your own individual fruits as and when they’re at their best. To highlight the flavour of a particular fruit in a summer berry mix, add that fruit’s eau de vie or liqueur.

Mix up this high-protein fruit smoothie, with oats and almonds ... If your blender cannot crush ice you will need to defrost the berries. With a GI of 45 this meal is high protein, low GI.

The Food and Drug Administration announced it was overhauling its berry safety strategy. Here's what to know, plus which are most likely to be contaminated.