Hsiao-Ching Chou, author of “Chinese Soul Food” (Sasquatch Books, 2018) This is how much Hsiao-Ching Chou believes in the recipes in her new cookbook: She’s going to let you text her if you have any problems. “Do you have a cooking question related to ‘Chinese Soul Food’? You can text me at 206-565-0033 and I’ll be there to guide you through the recipe!” Chou recently posted on Facebook. OK, so it’s not her personal cellphone you’ll be connected to, but still. Banter, a Seattle startup, is using Chou as a beta tester for its new service.