Begin by selecting the right type of zucchini. Try to put your hands on small-medium Lebanese zucchini no longer than 7 inches/17 cm, and sometimes called Mexican grey squash, their pale green skin is smooth and shiny, are ideal to make stuffed kousa mahshi; they taste great and hold their shape without getting soggy while cooking.
To make the meat and rice filling: In a colander, rinse the rice under running cold water and rub with your hands to remove the excess starch as you can and drain. Mix together the rice with the minced meat and ghee, and season with salt, sevenspice, black pepper and sumac (optional). Now your filling is ready.
Blanch the grape leaves: Blanch the fresh grape or brined leaves in boiling water until they wilt and turn darker green. Remove with a slotted spoon and allow to cool down completely.
Stuff and roll the grape leaves: Using a sharp knife, trim the stem (if it is still on the leaf) and discard. Place a grape leaf on a flat surface, with veiny side up, place one teaspoon of the meat-rice filling across the leaf from the bottom to top, repeat for all the leaves.
The zucchini: Wash, scrub and dry the zucchini, cut off the stem tips and gently hollow out the center with the vegetable corer. Try to hollow just like you are carving a pumpkin, hollow out the center leaving 1/3 inch/ ¾ cm, around the interior wall and maybe more if you mange doing that without poking the zucchini. It is simple, but still it is a skill that needs a bit of practice to master it.
Using your finger, stuff each zucchini with the rice and meat filling, leave about ¼ inch or ½ cm of space at top, allowing for the expansion of the rice as it cooks. It is important not to over stuff.
To put together: In a large pot (make sure it accommodates the zucchini, rolled grape leaves and meat chops), heat ghee and sauté the meat chops for 3 minutes per side, season with salt and remove the pot off the stove, arrange the grape leaves neatly over the meat chops, and place the zucchini on top. Add water to the pot, almost covering the grape leaves and zucchini, season with salt and add one tablespoon of ghee or butter.
Return the pot to the stove top, upon boiling reduce heat to low, cover up and let it simmer for two hours until fully cooked.
Add the freshly squeezed lemon juice and serve.
You have two ways to present the dish, 1- Drain the excess liquid in the pot, by tilting it in a bowl. Place a large serving platter over the pot and flip the pot so the mahshi is on the platter. Or alternatively, Arrange the rolled grape leaves and the lamb chops on a large serving plate one roll at a time. How delectable!