Soap mechanics? How 'bout mechanics soap.
And if it doesn't work out, you can have it for breakfast.
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Personally, my lather looks like sloppy wet homemade yogurt. And I like it that way. Gave up completely trying to make anything fluffy or that explodes. I agree that it's important to be able to make a good lather that works for you, but it's a lot easier to get better lather by using a more appropriate soap than climbing that asymptote. A soap that's missing something is always going to be missing it no matter how awesome you make lather.
with that soap, you don't need a razor ......