Toast the sourdough bread on both sides under a grill or in an electric toaster. Mix the mayonnaise and whole-grain mustard together and spread on one side of the toast. Top with the slices of pastrami followed by the arugula, cornichons and tomatoes. Slice into the desired number of pieces and serve.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
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