<http://schema.org/recipeInstructions>
" In 4-quart saucepan, heat potatoes, celery root, and enough water to cover to boiling over high heat. Reduce heat to low; cover and simmer 15 minutes or until vegetables are tender. Drain. Return potatoes and celery root to saucepan. With potato masher, mash potato mixture with margarine or butter and salt. Gradually add milk; mash until mixture is smooth and well blended. Keep warm. Sprinkle with parsley before serving."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.goodhousekeeping.com/food-recipes/a4478/long-island-mashed-potatoes-celery-root-1066/>