Leek and celery caressing pork tenderloin!

Traditional greek recipe called "Hirino prasoselino", that combines the tasty pork tenderloin with the sweet leeks and the special touch of celery. Easy, simple and soooo nice...

Ingredients
1 or 2 pork tenderloins (some put also leg)
1 Kg of leeks
2-3 carrots
a few celery branches
salt, pepper, olive oil
lemon juice 
2 eggs (optionally)

Procedure
Wash the meat, the leeks, the carrots and the celery. Pat them to dry and cut the meat in slices, the leeks in 5cm parts and celery and carrots as you like :)
Fry the meat in some olive oil from both sides.
Add the leeks, the carrots and the celery, lower the fire and cover the casserole. Leave them to stew for 4-5 min but watch out that it won't burn. Leeks should diminish in volume and become softer.
Add water up to the middle. Finish with salt and pepper.
Cover and cook until the meat becomes soft. If you use a pressure cooker (my case) leave it for about 20min.
Serve it with fresh lemon juice. If you prefer a thicker sauce, beat the eggs with a fork, add the lemon juice and then add it to the food and leave it to boil for 2-3 more minutes. Bon appetite!
P.S: Sorry, but not many photos today, as it was boys that cooked it and I arrived only later to get 1-2 photos... Boys forgot to add carrots, which explains why there are no carrots in the photos :)))