Wash the vine leaves well under running water, as the leaves are very salty. If necessary, desalt them in water for a few minutes.
For the filling, wash the rice, finely chop the herbs and spring onion, finely dice the tomato and then mix everything with the spices.
To fill the vine leaves, take one leaf at a time, cut off the stalk and place a horizontal strip with 2 - 3 tsp of filling in the middle of the leaf. Then fold in the sides and roll up the leaf. Repeat until no more filling is left.
Peel the potatoes and cut into slices about the thickness of a finger. Spread the slices on the bottom of the pot and layer the stuffed vine leaves on top.
Pour water into the pot until the vine leaves are covered and bring to the boil. Then cook over medium heat with the lid closed for about 30 minutes.
Add the lemon juice to boil and simmer with the lid half-open for another approx. 25 minutes.
Leave the vine leaves to cool and then serve with olive oil and lemon as required.