i would say wewe were pioneersn this.ereporter: over t the years, l and d his team refefined their seitan t to improve its coisistency and tataste d to enenre it keeps longer seit is s made owheaeat glen. it's thougught to have b been t used in anancient china a as at substitutute for buddhdhist ms who were v vegetarians.. it took lots of experimentation. erbil: it wasn't easy. weweried out various typeses f aiain, butt dididn'turn ouout ththe way we wananted it. we also created four sauces -- first we have turmrmeric and nger, then there's the classic herb sauce. wewelso make our own tzatztzik, and then we have a beetroott saucuce. reporter: so what do e customers think? >> it's delicious and it's vegan -- that's prtyty rare. i'a ststri vegan and i kno thatctuaualltastes good.sna >> y y bring non-vegan frienens here, anand they become e vegan. host: that's all for today.hat, don't forget though that we love see you next time. bye for now. ♪ [captioning performed by the national captioning institute, which is responsible