Place onion, salt and lime juice into the Thermomix bowl and chop 3 sec/speed 5.
Set aside and allow to marinate for a couple of hours if possible.
Place rice into simmering basket with sweet potato on top, add water to Thermomix bowl, insert basket and cook 15 min/Varoma/speed 3. Double check the sweet potato is well cooked, it should easily crumble with the back of a fork. Cook longer if needed, it won't hurt the rice at all. Set aside and empty water from bowl.
Place chillies into Thermomix bowl and chop 4 sec/speed 6.
Add chorizo and sauté 10 min/Varoma/Reverse/speed 1. Spoon off excess fat if desired and add rice and sweet potato to Thermomix bowl. If you prefer, this step can be done in a lot less time in a hot frying pan over a medium high heat.
Stir gently 5 sec/Reverse/speed 1
Cook one tortilla at a time over a direct flame for 10-15 seconds on each side, or in a dry hot fry pan. Arrange on work surface.
Divide the chorizo mix between tortillas, top with red onion and lime relish, crumbled feta and fresh coriander. This is the perfect excuse to bring out the best guac ever. Linked below!
Wrap tightly and cut in half to serve or just have it with a good squeeze of lime and some guac. Be prepared for messy but delish.