Truffle Oil (Sunflower or Grapeseed) from Truffieres de Rabasse
1 jar (100g) Truffenade from Truffieres de Rabasse
4 medium-textured fish fillets, such as sole, flounder, or catfish
1 onion, diced
1 tomato, diced
1 stalk celery, diced
Sea salt and pepper to taste