Barcelona Restaurant Help

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Hi guys, apologies because this isn't strictly weight loss related but I'm hoping some people have knowledge/experience to share with me.

I'm going to Barcelona in a few days. One of our party members has life-threatening nut allergies and less severe sesame seed allergies. Is anyone familiar with nut allergy-friendly restaurants in the Eixample area (or close by).

Any help would be huuugely appreciated!

Thanks in advance.