Seed Cake with Iced coffee

This is a grown-up elevenses or tea, or perhaps even breakfast if you were to be overly indulgent. It was apparently made to mark the end of wheat sewing in Spring. Highly recommended, wheat sewing or not.
Ingredients
250g unsalted butter
250g self raising flour
175g caster sugar
3 eggs
4 tbsp caraway seeds
3 tbsp Milk (Mrs Beeton recommends Madeira or …