Step #1 Put the egg yolk into a small bowl & whisk with a fork.
Step #2 Dribble a little bit of Olive oil into the bowl with the yolk & whisk while doing so.
Step #3 Repeat this over & over again until the mixture is thick, white & creamy.
Step #4 (you may need a little bit more/ less Olive oil.
Step #5 When the yolk mixture is nice & creamy, add the mustard & mix again.
Step #6 add the vinegar & parsley & mix again.
Step #7 Chop the Cappers abit, or if you like the cappers whole put them in whole.
Step #8 (add as much or as little cappers as you like, but I usually add about 1 tbsp), add abit of the capper juice as well to give the Sauce extra flavour (about 1 Teaspoon).
Step #9 Add your spices, Salt & pepper & serve.
Step #10 Note- This TarTar sauce keeps in the fridge for about 2 Days.