From their website FAQ's:
I have allergies/dietary restrictions, can you accommodate? Absolutely, we have some of these, too. Occasionally, we're not familiar with your specific needs/diagnosis, but ask for one of the managers and we can walk you through all our procedures and ingredients.
I don't have that allergy and it doesn't say it on menu. So I don't know. Call them.
Get quick answers from Little Donkey staff and past visitors.