Locust Bean Gum Substitute - Ask Jason

I get a lot of great questions from my readers. In order to help out everyone else I'm answering some of the most popular ones here on the blog. Have something you need help with? You can ask me on Facebook, contact me directly, or view all of the Ask Jason questions!

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?
- Alejo

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.

Mango locust agar noodles 2

As for substitutions, there's not a real good one for locust bean gum, it works really well with agar and they combine in ways that other ingredients don't. You could try using a gelatin-agar mixture, it has more elasticity, though it's not quite as strong, maybe something like these gelatin-agar gel sheets.

Or a combination of iota carrageenan with either agar or kappa carrageenan might work, though the carrageenan tends to be used for more tender preparations. You can also try making it without the locust bean gum, especially for gels besides the noodles, and see how it holds together.

I'd say if you plan on making gels more often, then purchasing a small packet of locust bean gum is worth the $8.00 investment.

I hope this helps out. Thanks and happy cooking!

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All tags for this article: Agar Agar, Agar Gel Noodle Recipes, Ask Jason, Gel Noodles, Gelling, Locust Bean Gum

Jason logsdon headshot This article is by me, Jason Logsdon. I'm an adventurous home cook and professional blogger who loves to try new things, especially when it comes to cooking. I've explored everything from sous vide and whipping siphons to pressure cookers and blow torches; created foams, gels and spheres; made barrel aged cocktails and brewed beer. I have also written 10 cookbooks on modernist cooking and sous vide and I run the website.
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