Dominique Ludwig Nutritionist MSc on Instagram: "This really is lunch in the flash, and while it might seem extravagant cooking a trout fillet for lunch, this meal is still more economical than a processed meal deal from a supermarket. This is probably one of my better lunches, but I often just open a tin of sardines or mackerel (£1) or use eggs, cottage cheese, tofu, feta, tins of beans for my protein. Whatever I’m making, I prioritise the protein. This little gadget is just such a…