Use McIntosh, Cortland, Empire, Beacon or Granny Smith apples for best results.
How to Measure Dry Ingredients Precisely
To get exact level cup measures of dry ingredients, such as sugar, spoon sugar into dry metal or plastic measuring cup, then level by scraping excess sugar from top of cup with a straight-edged knife or metal spatula.
Altitude Chart for Cooked Jams and Jellies
At altitudes above 1,000 feet, increase processing time as indicated: 1,001 to 3,000 feet - increase processing time by 5 min.; 3,001 to 6,000 feet - increase processing time by 10 min.; 6,001 to 8,000 feet - increase processing time by 15 min.; 8,001 to 10,000 feet - increase processing time by 20 min.