Antipasto with seasoning

1/2 cup olive oil 2 tablespoons rice vinegar 2 tablespoons red wine vinegar 1 tablespoon mixed Italian herbs 1 teaspoon dried oregano 1/2 teaspoon dry mustard[...]

1 (4 ounce) can mushroom stems and pieces , drained and finely chopped 1 (14 ounce) can artichoke hearts , drained and finely chopped 1 (10 ounce) jar pimento[...]