Michael Smith is one of my favourite chefs. In his words - "Roasting adds flavour to just about anything — including mellow potatoes headed for a salad. The sharp flavours of capers, mustard and vinegar really perk them up. This is a popular dish at my family summer beach picnics but it’s great in the middle of the winter too!". As you can see, the measurements are very vague. Michael likes people to cook to their tastes. You can cook these in your BBQ as well, with indirect heat. You can serve this at room temperature or chilled. Enjoy!