"The secret to the Best Ever Tomato Sandwich is the special sauce from The Prince of Wales, a neighborhood pub in Farmborough, England...."
INGREDIENTS
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½ cup mayonnaise
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1 tablespoon whole grain mustard
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¼ red onion, finely grated
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¼ cup chopped basil, plus extra leaves for garnish
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8 slices good quality white bread
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2 medium-large tomatoes
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4 medium tomatoes
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Handful cherry tomatoes
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Salt and pepper