Stuffed Courgette Flowers and Sage Leaves in a Light Beer Batter

One of the bonuses of growing your own courgettes is that you can also use their flowers, which have a lovely tender sweetness. To me, the most delectable way of eating them is deep-fried in batter, as they do in Italy. The courgette flowers should be picked shortly before cooking and should be closed rather than open. If the flowers are still closed you can insert a piece of cheese into the cent