Here's a patent they applied for a few years ago, with plenty of detail: https://www.google.com/patents/US20120093994?pg=PA1&dq=Hsieh+Huff+Meat&hl=en&sa=X&ei=XP

Here's a patent they applied for a few years ago, with plenty of detail: https://www.google.com/patents/US20120093994?pg=PA1&dq=Hsieh+Huff+Meat&hl=en&sa=X&ei=XPOoUezzPNOj4AOb_YC4CA&sqi=2&pjf=1&ved=0CDQQ6AEwAA https://www.google.com/patents/US20120093994?pg=PA1&dq=Hsieh... It goes into detail about how they use they tweak the raw ingredients, pressure, and temperature to align the protein fibers of the plant and achieve a similar shear force as meat.