I place up to 15 feet of a 5″ wide strip of yellow or red cedar in my 22-quart pressure cooker to cook all the sap out so I avoid sticky hands while spinning the thin strips with wool to create warp for Chilkat weaving. Notice the tin foil “wind breaker” around the bottom edge of the pot – I learned this from my (all-too-temporary) assistant, Lis Saya
You don’t need to cook the sap out of cedar bark if you are going to weave baskets or hats, etc. You will want to cook the sap out of the bark if you are spinning warp for your Chilkat weavings.
Set up your kitchen outside. Use a propane two-burner hotplate.
First, oil the lid and entire inside of the pot. (This prevents the sap from sticking heavily to your pot.) Do not oil the gasket of the lid. (You want to avoid having the gasket slip out of place.)
Then fill pot with 3/4 amount of water, place your strip(s) of cedar in the water, cover and place weight in its position. How much cedar do you place i this amount of water? Use your discretion based on the size of pot and the size and amount of cedar strips – there is no hard and fast rule here.
After water begins to boil, turn heat down to a rolling simmer and let boil for at least an hour up to two hours at 10-pounds pressure.
Let out pressure; let cool down (I wait until overnight), then remove lid.
Take cedar strips out of pot and place on paper bags.
DO NOT POUR CEDAR BARK water down any internal drains (sinks, toilets, tubs, etc.). Pour the sap outside in your driveway or in an area that you do not want anything to grow.
Let cedar completely dry out before placing in paper bag or cardboard box. NEVER use plastic bags are containers unless of course, you know that cedar is completely thoroughly dry. (Let’s avoid mold)..