Chargrilled Chicken Burger

SOURDOUGH BURGER BUN (White WHEAT Flour (WHEAT Flour, Calcium Carbonate, Iron, Niacin, Folic Acid, Thiamin), Water, Shortening (Emulsifier: Mono- And Diglycerides Of Fatty Acids; Rapeseed Oil), Sugar, White Sourdough (White WHEAT Flour, Water), Yeast, Salt, Enzymes, Bread Improver (WHEAT Flour, Flour Treatment Agent: Ascorbic Acid), Glaze (Pea Protein, Dextrose)), CHARGRILLED CHICKEN (Chicken Thigh, Salt, Dextrose), TOMATO, TARRAGON MAYONNAISE (Rapeseed Oil, Water, Spirit Vinegar, Salted Free Range EGG Yolk (Free Range EGG Yolk, Salt), Horseradish, Cornflour, Free Range EGG, Tarragon, Salt, Dijon MUSTARD (Water, MUSTARD Seed, Spirit Vinegar, Salt), Lemon Juice), GHERKINS (Gherkins, Water, Spirit Vinegar, Salt), SALAD LEAF.