A little oil and vinegar, salt, pepper in a jar with a lid - shake it up, good to go. Balsamic vinegar with strong olive oil is good.
For something creamy, try a spoonful of mayo, tsp of sugar, 1/2 tsp each salt & pepper, tsp of white vinegar - all in a jar with a lid and shake it up. Kindof a coleslawey dressing.
If you have a food processor, try mixing raspberries in with the oil and vinegar, something sweet would balance it.
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