Only use tightly closed mussels. Rinse well and drain. Place the mussels, wine and garlic in a suitable saucepan. Cover tightly and cook over a high heat for a few minutes until all the mussels have opened. Discard any that do not open. Add the stock, lemon zest and juice.
Bring to a simmer. Add the cream and simmer for a few more minutes. Season with pepper – there should be no need for salt. Serve in bowls with the baguettes on the side, for dunking.
Slice the baguettes lengthways into sticks. Toast at 170°C for 10 minutes or until crisp and golden.