Poached Eggs With Bacon Rosti and Tomatoes

6 slices bacon , cut in to small pieces (about 1/2 inch) 1 small onion , fnely diced 3 medium yukon gold potatoes 2 tablespoons butter , melted salt & pepper[...]

1 teaspoon cider vinegar 2 tablespoons cider vinegar 8 slices bacon , cut crosswise 1/4 inch thick 4 slices country-style white sandwich bread, halved[...]