Persian Mulberry Jam
Fill jars with jam, leaving about 1/2-inch head space. Fasten with new lids and place in boiling water bath for 10 minutes. Remove and cool. Check lids by pressing down in center. Lid should not spring back; if lid springs back, return to water bath 5 more minutes. Tighten lids and wipe clean. Store in cool, dark place.
This recipe yields 3 cups.
Comments: Persian or "black" mulberry varieties, M. nigra, mature from mid-July to September, are always dark purple and abound in sweet-tart, staining juice.
Yield: 3 cups