Toulouse Lautrec potato salad!

I grew up with this salad. My mother made, and still makes, this salad all the time. Perfect for any buffet. Now, I remember a few years ago, I actually copied off my mother's recipe, but as usual, I have now misplaced it. Not really, it's in a box somewhere. Anyway, trusty Google comes to the rescue! Of course, all of the recipe links are in Swedish!

Here is the recipe link in English: href="http://nwt.se/mera/mat_dryck/article443691.ece">

For 4-5 people

10-12 potatoes (2-3 potatoes per person) (I used Organic Yukon Gold from Whole Foods)
about 1/2 dl organic canola oil (I suppose one could use light extra virgin olive oil instead, but apparently the French use canola oil or some other low flavored oil)
2-3 hard boiled eggs
1-2 tsp Dijon mustard (has to be French; Trader Joe's Dijon mustard fit the bill)
1 tbsp Tarragon white wine vinegar (Whole Foods has this - I picked this because it was made in France)
More organic canola oil, 4-5 tbsp
Salt
Pepper
Fresh tarragon
Fresh parsley
Leeks, thinly sliced
Cornichons

Garnish:
Black olives
boiled egg halves
chopped fresh chives

Because I needed to make a big salad, I attempted to double the recipe. I boiled the potatoes and the eggs. I decided to keep the peel on because it was thin and the peel is the most nutritious part of the potato. I sliced the potatoes and put them in a big bowl and drizzled some oil in and set aside in the fridge. Meanwhile, I was peeling the eggs, and as I was peeling the eggs, I cut my thumb on a little bit of egg shell. Ouch. Eggs are dangerous, I tell you! I cut the eggs into half, scooped the egg yolks out and put them in a small bowl, where I added the mustard, some tarragon, parsley, salt, pepper, oil and vinegar, letting the mixture emulsify. I also added chopped cornichons, thinly sliced leeks. I then added this mixture to the potatoes and let this sit in the fridge overnight. The more time you give it, the better it tastes. I topped this salad with a bit of chopped chives, some halved black olives, and 2 quartered hard boiled eggs.