This is such a spontaneous recipe - not even a proper recipe but it's more of an update of the original tuna steak recipe (here) because I've discovered the magic of broccoli-potato mash. How haven't I used this simple combo before? One night, my husband and I've been watching Jamie Oliver on 24Kitchen (as you do) and he whips up this amazingness - wow! We immediately ran to the kitchen and yup, it tastes yummy but also provides as much visual interest and nutritional value as possible. Potato is the perfect way to give your body complex carbohydrates which are key to long-term health. Broccoli meets almost all of my standards (also a complex carb) as it's loaded with essential vitamins and minerals, has beautiful color and is delicious when steamed on its own.