Just made these eggs for the second time and they are great! I had the same guests that I had had the first time; these folks lived in Paris for several years and they loved the eggs! I uses more 4-6, anchovies this time; made the eggs the day before and let the flavors meld and served them with rustic bread to sop up the good drippings.
I halved this recipe with no problem. The recipe did not state when to add the tarragon so I added it to the sauce just before adding the olive oil and the vinegar. This was quite tasty but definitely needs to sit overnight to let the flavours meld. While this is not something I would make often due to the overwhelming fat content - I would definitely make them again. I served on toast as suggested for breakfast. Thanks for posting! Made for PAC Spring 2008.