<http://schema.org/recipeInstructions>
" Puree half the tomatoes and all the juices with the jalapeno, garlic and ginger in a food processor. Dice remaining tomatoes. Combine tomato puree, fish sauce, sugar and vinegar in a deep pot and slowly bring to a boil over medium-high heat, stirring continuously. When mixture comes to a boil, reduce heat to simmer and add diced tomatoes. Simmer gently for 30 to 40 minutes, or until mixture is dark red and jam-like. Pour into a bowl, cool and refrigerate."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.delish.com/cooking/recipe-ideas/recipes/a8775/lucy-waverman-ketchup-recipe/?src=shelter_footer>