How much does it cost to make the famous coronation quiche? 

Lisa Salmon made the coronation quiche recipe containing spinach and broad beans – and even her teenagers ate (most of) it

'Finding fresh tarragon is about as easy as wearing the Crown Jewels on a night out at Wetherspoons' (Lisa Salmon/PA)

At first glance, the British King and Queen Consort’s personally chosen ‘coronation quiche’ recipe looks fairly cheap and easy to make.

Featuring spinach, broad beans, cheese and fresh tarragon in a no-faff recipe (you put everything in a pre-baked pastry case and stick it in the oven), what could possibly be the problem?