In my effort to try and reduce processed foods and chemicals, I've been making homemade mayo. We don't use much may though so I waste a lot because homemade doesn't last for years like Best Foods! ;) This is the recipe I like the most so far- it's an adaption of Michael Symon's recipe.
2 large egg yolks
2 tbsp. water
1 tbsp. white vinegar
3/4 tsp. salt
1-1/2 cup canola oil
In the bowl of a food processor, add everything except the oil and puree until combined and frothy. Pour in the oil in a thin stream while the processor is running until thick.
You can add garlic to make garlic mayo, some roasted red peppers to make an aioli or whatever you like! It's fun!