In a large, deep skillet over medium heat, soften the garlic in the butter. Add the turmeric and mix well. Add the remaining broth, the lemon zest and juice. Simmer for 3 minutes. Whisk in the cornstarch mixture, capers and mustard. Bring to a boil and simmer for 1 minute or until the sauce thickens. Season with salt and pepper.
This long stainless steel grater with a fine blade is perfect for grating the zest of citrus fruits, as well as nutmeg or garlic. The handle and the non-slip strip allows for a comfortable and secure grip.