It is also great for chocolate fondants and tarts. Established over 100 years ago in the United Kingdom, Green's is one of the leading ready-mix desserts brands, a company enriched with authentic and original traditions that are still followed today. Use Green’s Cornflour to thicken sauces, soups, stews, and other dishes. It’s also great for chocolate fondants or tarts! Green's Corn Flour can be used to thicken sauces, soups, stews, and many other dishes.