Scrub the sweet potatoes clean, then prick with a fork and cook in the microwave for 8 to 10 minutes, or until tender.
Score the cucumber skin lengthways with a fork to create grooves (these will catch the dressing), then roughly bash with the bottom of a pan to break it up – it doesn’t matter how rough it is. Do the same with the radishes and tomatoes, halving the tomatoes first.
Place the bashed salad veg (juices and all) into a bowl, drizzle over 1 tablespoon of red wine vinegar and 2 tablespoons of oil, then season to taste with sea salt and black pepper. Pick and tear in the coriander leaves, then toss everything together.
Place a large frying pan over a medium heat to warm up while you trim and finely slice the spring onions, grate the cheese and mash the sweet potato (leaving the skin on).
Place a tortilla into the pan, sprinkle over half the cheese and spring onions, then top with all the sweet potato.
Add a good few shakes of Tabasco (if using), scatter over the remaining spring onions and cheese, then top with the remaining tortilla, pressing down slightly.
Carefully flip the tortilla and continue cooking for 1 further minute, or until golden and crisp. Slide onto a board and cut into 8 wedges.
Destone the avocado (if needed), drizzle over a teaspoon each of oil and vinegar, then place on the board.
Put the yoghurt into a small bowl, and swirl through a splash of oil and a few dashes of Tabasco (if using).
Serve the quesadilla wedges with the salad, avo and dollops of yoghurt. Slice the lime into wedges for squeezing over, then get stuck in.