Weird. My wife and I just returned from the sugarbush about an hour ago, been tapping trees most of the day. Then I hear someone on Pondboss is asking about the process.
Yes, we've tapped black walnuts. Syrup is incredible, process is much the same with a couple of notable differences. Our first year I boiled 10 gallons of sap, now we produce 6 types of maple syrup. I'll help in any way I can, but a few years ago I agreed to stop posting on the forum. If you're on Facebook, look us up at B&B Farms Maple Syrup. If not send me a pm and we'll work it out. I'll keep an eye on this site for a couple days. Good luck with your sugaring, it's VERY addictive!