How to make the perfect prawn cocktail

Felicity Cloake: Do you have a soft spot for this retro classic? What kind of prawns do you use, is iceberg essential, and can any fancy sauces beat mayonnaise mixed with tomato ketchup?

The science of mixing mind-blowing cocktails

Amy Fleming: A guide from 1948 still contains the best advice about cocktail-making – but modern mixologists use plenty of 21st-century science, too. Is all that effort worth it?