Sign up for a 3-month subscription to Proof Baking. Bread delivered to the doorstep of your San Francisco home or office. At the $100/month level, we'll deliver two loaves per month as thank-you gifts. For $50/month, one loaf per month. Make your donation on the New Door site here, and mention Proof Baking. Easiest if you just make a one-time donation of $300 or $150.