8 slices Bacon, lean slab
1 ripe avocado, peeled and seeded
1/2 small tomato, chopped
3 tablespoons scallions, minced (white parts only)
1 tablespoon cilantro leaves , minced
1 small jalapeno chile, minced
1 tablespoon lime juice, fresh
salt , to taste
black pepper, to taste
12 thin slices pumpernickle bread, crusts removed
Softened butter, for spreading