Bring large pot of water to a low boil and add enough salt to heavily season the water. The water should be quite salty.
Add green beans into the pot a few at a time, so the water doesn't stop boiling. Stir with a slotted spoon and blanch the green beans for 2 minutes.
Carefully remove one bean and plunge it into the ice bath for 5-10 seconds and test for doneness. It should be just al dente, not soft.
When the beans are just cooked to your liking, remove them with the slotted spoon and plunge them into the ice bath for a couple of minutes. This will stop the cooking process and set the vibrant green color. Once cooled, they will be ready to serve or use for other recipes.
Chop and mix together the gremolata of lemon zest, parsley and almonds.
To finish, add the ghee to a skillet over medium heat and toss, about a minute, then add the chicken stock and toss again and let warm through, about a minute more.
Plate and top the green beans with the gremolata, a fresh crack of black pepper and some flaky sea salt. Drizzle all over with a small glug of olive oil (about a teaspoon or two).