Mini recipes, those with five ingredients or less, are always the best because they are so simple and usually cost a lot less than the pre-made versions available at the market.
This balsamic vinaigrette has just four ingredients (salt and pepper don't count) and gets a really thick creamy texture if made in a high speed blender or even with an immersion blender.
4 tablespoons balsamic vinegar
1 teaspoon Dijon mustard
1 clove garlic , crushed or finely chopped
3/4 cup really good extra virgin olive oil
Salt and freshly ground pepper , to taste
Combine the balsamic vinegar, mustard and garlic in a blender or food processor. With the machine running, gradually add the olive oil through the opening in the lid to process into a thick dressing. Season with salt and pepper.
I've made the dressing using an immersion blender which produced an almost mayonnaise-like consistency as a great deal of air was whipped into the dressing.