Rhubarb-Ginger Syrup
- makes 1 jar to keep, plus a little to use right away; can easily be doubled or tripled
1.5 cups white sugar
1 cup water
2 cups thick-sliced rhubarb stalks, leaves discarded
1 cup chopped ginger (no need to peel)
Prepare canner (or a saucepan deep enough to cover the jar by 3 inches), plus a small jam jar and its lid, according to the usual method; keep jar and lid hot until needed.
In a medium saucepan, bring the sugar and water to a simmer, stirring to dissolve. Add the rhubarb and ginger; return to a simmer, then reduce heat and let slowly bubble until the rhubarb is thoroughly soft. Remove from heat and let steep for 30 minutes. Meanwhile, line a metal strainer with cheesecloth, and place it over a heatproof bowl. (If you want crystal-clear syrup, use a muslin jelly bag and be prepared to wait for gravity to draw the liquid into the bowl; be careful not to press or squeeze the solids.)
Bring the strained syrup back to a simmer, then pour into the heated jar, leaving 1/2-inch headspace. Wipe rim and center lid on jar. Screw band to fingertip-tight.
Place jar in canner. Bring to a boil; process covered for 5 minutes. Remove lid, wait 5 minutes, then remove jar. Cool, check seal, and store in a cool, dark place.