Pour vinegar into a salad dressing shaker or small bottle.
Add salt and black pepper. Also, add in the dijon mustard paste.
Close with the lid and shake so that the ingredients are well combined.
Open again and pour in all the oil.
Close the bottle with the lid and shake one last time. Shake until well combined. The dressing should look smooth.
Store in the fridge until further use or use dressing straightaway as is over your salad.
I like to use white wine vinegar or apple cider vinegar. You can use synthetic vinegar too or other flavors vinegars.
I use olive oil but you are free to use safflower oil or sunflower oil instead.
Please use only french style dijon mustard.
Tip: We mix the vinegar, salt, blakc pepper and mustard first without the oil so that the ingredients get mixed up better. The oil is always added at the end, that way the dressing won't seperate when it sits around.