Which approach to use for text analysis (Recipe Analyzer)?

Question

natural language processing

Hello. Recently there was a task to make a Recipe Analyzer.
There are already services like:
edimka.ru/cgi-bin/gen.pl
www.galya.ru/AnalyzeRecipe.php
www.calorizator.ru/analyzer/recipe
They can extract ingredients (products) from plain text. Maybe someone has met such a ready-made solution or in which direction to look in order to write this on their own?

Answer 1

Isolate the ingredient, quantity, action. Make up a dictionary first.