La Mian

Hi,

This is my first post here.  I was drawn here by doing a search on Kansui Water in Google.  I've been trying to find a suitable Alkali for including in a dough recipe to make Hand Pulled Noodles aka La Mian.  In China they use a compound called Peng Hui which is some kind of Ash.  It's not available in Europe so I'm looking for an alternative.  Would anybody here have  any suggestion for an alternative which would act on the dough gluten and make the dough more 'stretchy' and indeed hold together better when boiled?  Thank you for any replies.