Heat a large skillet over medium-high heat. Add vegetable stock and bring to a simmer.

Add green beans, spread evenly in the skillet and cover with a lid. Simmer for 3 to 4 minutes.

Remove lid and drain off the remaining vegetable stock. Add in ghee, minced garlic, and salt and pepper. Use tongs to stir and cook for another 4 to 5 minutes, until green beans are just tender.

Zest a lemon onto the green beans and serve.