Peel and finely chop the onion. Wash the meat, dab dry and cut into strips. Wash asparagus, cut off woody ends. Cut asparagus into pieces. Clean and wash mangetouts. Clean and wash the tomatoes. Wash lemon thoroughly, grate peel finely. Halve lemon, squeeze 1 half.
Heat the oil in a large frying pan and fry the meat thoroughly, turning it over. Add the onion and fry briefly. Season with salt and pepper. Add tomatoes and fry briefly. Add lemon zest. Dust with flour, sweat and deglaze with chicken stock while stirring carefully. Bring to the boil and season to taste with salt, pepper and 2-3 tbsp. lemon juice
Meanwhile, cook the rice in boiling salted water according to the instructions on the packet. Place asparagus in boiling salted water and cook for 3-4 minutes. Add sugar snap peas and cook for another 1 minute. Pour into a sieve and drain well
Mix the vegetables into the shredded meat, heat up, season again with salt and pepper. Arrange in a pan sprinkled with pepper. Add the rice in a small bowl