Cobb salad platter with buttermilk dressing

Cobb salad platter with buttermilk dressing Ingredients4-6 plum tomatoesOlive or avocado oil6 rashers streaky bacon4 chicken breasts, sliced and tossed in chicken spice4-6 hard-boiled eggs, chopped into chunks2-3 baby gem lettuces, leaves separated and washed - or any lettuce of choice3 avocados, stoned and slicedJuice of 1 lemon2 sweetcorn, cooked and sliced into chunksDressing250ml (1 cup) buttermilk125ml ( cup) mayonnaise45ml (3 tbsp) white vinegar5ml (1 tsp) cayenne pepper1 garlic clove, cru...