In Modernist Cooking Made Easy: Getting Started the recipe for mango noodles (and other recipes) includes locust bean gum, but the Modernist Pantry kit I bought does not include it. How can I substitute it? The recipe asks for locust bean gum and agar. Can I use xanthan gum or carrageenan?
Hi Alejo, that's a good question. In general, agar gels are brittle (they fall apart) while locust bean gum adds elasticity (makes them chewier and stay together). For gels that are being shaped, especially the gel noodles, the elasticity is critical, otherwise they tend to fall apart. For things like cubes or softer gels, you don't have to have the locust bean gum, the gels will just be less chewy.