Substituting lime juice for lemon juice in hollandaise/mayonnaise? If I have fresh limes on hand but not fresh lemons, can I use the limes to make hollandaise and mayonnaise?  Assuming it works, what effect will the lime juice have on flavor and texture?
Yes, it will work. The texture won't be different but the flavor will be significantly different. It will taste like lime hollandaise. :-P

I imagine a lime hollandaise would taste great on fish and other seafood. I'm not entirely sure what you would do with  lime mayonnaise though.