The delicate fragrance of elderflower is amazing when combined with lemon, and in this lovely teatime cake both flavour and scent come together beautifully.
Preheat the oven to 180°C/350°F/Gas 4. Line 2 × 20cm/8in shallow cake tins with greaseproof paper, then grease the paper with butter and sprinkle with the 1 tablespoon sugar. To make the cake, separate the eggs into 2 bowls, then cover and chill the egg whites. Whisk the yolks until fl