Prepare through step 6. Wrap patties individually and refrigerate for up to 2 days or freeze for up to 3 months. Thaw in the refrigerator before cooking.

Ingredient Note: Red lentils can be found in many supermarkets and virtually all natural-foods stores.

Tip: To peel a celery root, cut off one end to create a flat surface to keep it steady. Cut off the skin with your knife, following the contour of the root. Or use a vegetable peeler and peel around the root at least three times to ensure all the fibrous skin has been removed.

Note: Lovage is related to celery and has a similar taste and appearance. Its leaves are used as a seasoning

Prepare through Step 3. Cover and refrigerate for up to 8 hours.

Ingredient Note: Chervil (from the Greek for “herb of rejoicing”) has a mild flavor between those of parsley and anise. It doesn’t dry well, so is best used fresh.

The topping (Steps 1-2) will keep, covered, in the refrigerator for up to 2 days. Reheat before serving.