@chefslt: 1. Melt butter in a saucepan.
2. Sauté shallot until soft.
3. Add garlic and cook gently without browning.
4. Add stock and reduce slightly.
5. Add cream and simmer for 5–7 minutes.
6. Add Parmesan and whisk until smooth.
7. Season with salt, pepper and lemon juice.
8. Finish with parsley and serve hot.