In baking souffles, I find that they start deflating from the moment I remove them from the oven. One chef suggested adding xanthan gum which is hard to find and quite expensive. Do you think arrowroot might work, or can you suggest another alternative to stabilize them?. Many thanks. 
Its normal for a souffle to deflate after leaving the oven. In the past with chocolate souffle i have had success with whipping the egg whites to a stiff peaks then carfully folding the mixture together. Keep in mind that you have only a minute or so to get the souffle to the guest carefully with out banging it on the table. The longer you can keep your souffle hot and steaming, the longer it will stay risin.  