Spinach Salad with Blue Cheese without tuna wine

1 tablespoon lemon juice (or to taste) 3/4 teaspoon Dijon mustard 3 tablespoons olive oil 1/2 lb cleaned baby spinach 1 cup thinly sliced mushroom 4 slices[...]

3 cups baby spinach 1 head romaine lettuce , washed and torn 3/4 cup sliced mushrooms 3/4 cup swiss cheese , shredded 1/2 cup red onion , thinly sliced 1/2 lb[...]

1/4 cup white vinegar 2 teaspoons Dijon mustard 1 garlic clove , minced 1/2 teaspoon ground pepper 2/3 cup olive oil 4 ounces crumbled blue cheese 10 ounces[...]