Drain the corn. Clean and wash the cucumber, radishes and peppers. Cut cucumber and radishes into slices, peppers into strips. Clean, wash and cut lettuce into bite-sized pieces.
Stir yoghurt and oil until smooth. Wash herbs, dab dry, chop and stir in. Season sauce with lemon juice, salt, pepper and sugar. Cut bacon into strips, drain in a pan without fat and remove.
Wash medallions and pat dry. Fry them in bacon fat on both sides for about 5 minutes. Season with salt and pepper. Mix the vegetables and arrange on a plate with the medallions. Sprinkle bacon over them.
Add the sauce.