Heat the oven to 200C/180C fan/gas 6 and bake the sweet potatoes for 45 mins, or until tender. Meanwhile, mix the steak with half each of the garlic and paprika.

Heat the oil in a non-stick wok and stir-fry the pepper for 1 min until starting to soften. Add the remaining garlic and the cumin seeds, and cook for a few minutes more. Tip in the tomatoes and the remaining paprika, and cook for 10 mins. Add the beans and bouillon, and stir-fry until heated through. Stir in the coriander. Halve the baked potatoes almost all the way through, and put onto plates. Top with the avocado and squeeze over some of the lime wedges, and divide the beans between the plates.

Return the pan to the heat and cook the steak for 5 mins. You shouldn’t need to add any oil if you have a good non-stick pan, and if you don’t wash the pan, you'll get some nice charred bits on the steak. The centre of the steak strips should be pink and tender. Pile onto the potatoes with a few coriander leaves, and serve with the remaining lime wedges for squeezing over.