Bottling Roasted Green Chilies:
Because chilies are naturally low in acid, canning them requires special precautions that differ from those followed when canning high-acid fruits. Growth of micro-organisms particularly must be avoided.
Processing with a Pressure Cooker is the only safe way to can chilies and other non-acid foods. This guide provides the correct processing times and canner pressures for canning chilies safely.
PREPARING CHILES
Blistering:
The tough outer skin must be removed from chilies. Blistering the skin by one of the following methods makes removal easy. This process is also known as roasting chilies.
Handling pungent chilies can burn hands and eyes. Protect hands by wearing rubber gloves. Keep hands away from eyes while working with chilies. Wash hands thoroughly before, during and after handling the chilies.
Wash and dry chilies. With a knife, make a small slit in the side to allow steam to escape. Be sure heat source is very hot. Turn chilies frequently to prevent scorching and ensure even blistering. Remove from heat and place chilies in a clean garbage bag, or plastic zipper bag. This allows the chilies to sweat which makes them easier to peal.
If chilies are not processed in the pressure canner within two hours after blistering, place them in shallow containers in the refrigerator to prevent spoiling.
The following are three heat-source methods for blistering chilies:
Oven or broiler method - Place chilies in a hot oven or broiler 400-4500F for 6-8 minutes until skin blisters so that it can be pulled away form the flesh.
Range top method - Place chilies on a hot electric or gas burner after covering burner with a layer of heavy wire mesh.
Outdoor grill method - Place chilies on a charcoal grill about 5-6" above glowing coals.
Salt:
If desired, add 1/4 teaspoon of salt per half-pint, or 1/2 teaspoon salt per pint. Salt may be omitted, as it's used only for flavor. For best results, do not use salt substitutes for canning because heat causes some substitutes to become bitter or develop a metallic taste. Instead, add salt substitutes just before serving.
FOLLOW THESE STEPS FOR PRESSURE CANNING (Written for the 23 Quart Presto Pressure Cooker)
Use narrow-mouth or wide-mouth Mason jars with self-sealing lids held in place by screw-on metal bands. Only half-pint and pint jars should be used for canning green chilies.
REPROCESSING UNSEALED JARS
Remove lids from unsealed jars and discard. Check sealing surface of jar for tiny nicks or cracks. If the jar has defects, discard it and replace with another jar. If not, add a new lid and process for the same amount of time within 24 hours. Unsealed jars can be kept in the refrigerator and the food used within 3-4 days, or remove about an inch of the contents and freeze.