Slowly cook the chicken breast in a pan with Hela Argentina with sesame and a small splash of water. Simmer over low heat until the chicken falls apart (about 25 minutes). Then separate the chicken with two forks to make pulled chicken.
Cut the red onion and radishes thin on a mandoline.
Cut the romaine lettuce into small pieces.
Short-fry the brioche buns in a dry pan or oven until they are lightly crispy.
Top each sandwich with romaine lettuce, pulled chicken, radishes and red onion.
Cut the lemon into slices and squeeze it out over the bread before serving.
Sprinkle generously with jalapeño sauce and serve immediately.