Rhubarb tag? My experiment resulted in some pretty cool looking tags. While I was cutting rhubarb for a rhubarb/strawberry/raspberry crisp I noticed the juice beading up on my plastic cutting mat. I ran to my studio and got some manila tags and soaked up the juice. It was interesting that two different shades of rhubarb pink/purple came out on these tags. I guess the difference was that they were from two different manufacturers and the manila cards reacted uniquely. Yes, the crisp was delicious!