I am actually a cook / chef by trade.
With an e is the UK spelling.
4 ingredients in tartare sce. Mayonnaise, capers, gerkins and herbes.
Herbes as apposed to herbs Herbes is a mixture of herbs rubbed together and chopped finely. There is no specific blend, it is just what ever herbs you like. Although it is common to use herbs from the Provance region of France.
Basic tartare = 9dl (900ml or 1 1/2 pints) of mayo. Add 25g (about 1 oz) of finely chopped cappers and 50g (about 2 oz) of finely chopped gerkins. Dill gerkins are most common. Add herbes to taste and mix well...That is it. You can season to taste if you like with salt, pepper or tabasco etc.
Of course if you want to make your own mayo it gets more involved.
itsaboat mate...Life is just a boat and then ya marry one !