Classic Vinaigrette in a Jar

The ABCs of French cuisine and the "mother sauce" for many others like it: you can use balsamic vinegar or orange juice as the sour component, replace olive oil with sunflower or mustard oil, add finely chopped shallots - it gives a spicy, ringing note. The basic formula is simple: 1:3 acid and oil, as long as you know it, you don't need a vinaigrette recipe. It goes with literally everything - from light green salad stacks to hearty compositions that include meat or fish, like Nicoise. You just need to follow your taste: for example, if the composition includes bitter arugula, then you will no longer need onions, and if tomatoes dominate, then you should reduce the acidity a little.