How to Pasteurize Your Homemade Wine
Wash the bottles., Let them dry., Warm them up., Store the bottles., Take one of your empty sterilized bottles., Fill the bottle., Repeat this process with each bottle until all of the wine bottles are filled., Put a trivet/pressure cooker rack in...
Step-by-Step Guide
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Step 1: Wash the bottles.
As you use the wine bottles, wash them with soap, water, and a wine bottle brush; then rinse and invert them to dry. -
Step 2: Let them dry.
When they're totally dry, wrap a small piece of aluminum foil over each bottle opening to keep anything from getting inside the bottles. , When you have a couple of dozen of these cleaned bottles, put them in a cold oven, standing upright; then set the oven to 248°F (120°C), when the oven reaches 248°F (120°C), set a timer for 30 minutes; after 30 minutes shut the oven off and let the bottles cool in the oven overnight, with the door shut.
Wine bottles are made of soda-lime-silica glass, not borosilicate glass, like Pyrex; therefore, if you take them out while hot, they can break due to thermal shock. , When the bottles have cooled, put them into a case box (stored upright with the foil still over the top of each bottle) and close the flaps.
They remain sterile indefinitely (as long as the foil remains in place) and are ready to go when you need them. , Remove the aluminum foil from the bottle. , Using a funnel, or siphoning tube, fill the bottle with wine until the wine level is just above where the neck starts, and then put the aluminum foil back on. , Once the bottles are filled, the next step is to pasteurize the wine in order to completely stop fermentation (if fermentation is not stopped, then the yeast will continue to produce gases that will increase the internal pressure of the bottle and can make the bottles explode during storage). ,,, The water level doesn’t have to be above the wine level in the bottles, but it should be as high as you can get it safely without it boiling out of the pot. ,, Heat the water until the temperature inside the bottle reaches 165 °F (74 °C).
This temperature kills the yeast; this temperature also kills harmful bacteria such as Salmonella, Listeria, and E. coli.
Once the temperature reaches 165 °F (74 °C), hold it at this temperature for 15 seconds, then immediately remove the bottles.
Use oven mitts on both hands and grab each bottle, with a tight grip, by the neck with one hand (not the foil, which could cause the bottle to slip out of your hand) and the bottom of the bottle with the other hand; be extremely cautious because the bottles are hot and slippery from the condensation and the wine is hot. , Keep the foil still in place during this process.
Note: if pasteurizing multiple batches, you must pour out the heated water from the previous batch.
Always start with cool water.
Never put bottles into hot water or the glass will break; the bottle and the water must be heated together to prevent thermal shock. , Once the bottles have cooled, remove the foil from one bottle and cork it; repeat until all bottles are corked.
Age some; drink some. -
Step 3: Warm them up.
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Step 4: Store the bottles.
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Step 5: Take one of your empty sterilized bottles.
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Step 6: Fill the bottle.
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Step 7: Repeat this process with each bottle until all of the wine bottles are filled.
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Step 8: Put a trivet/pressure cooker rack in the bottom of a tall stock pot.
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Step 9: Place the aluminum-foil-topped bottles of wine on the trivet/pressure cooker rack.
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Step 10: Pour tap water into the pot.
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Step 11: Place a digital thermometer through the foil and inside one of the bottles.
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Step 12: Heat the bottles.
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Step 13: Set the bottles aside on the kitchen counter to cool completely.
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Step 14: Cork your batch.
Detailed Guide
As you use the wine bottles, wash them with soap, water, and a wine bottle brush; then rinse and invert them to dry.
When they're totally dry, wrap a small piece of aluminum foil over each bottle opening to keep anything from getting inside the bottles. , When you have a couple of dozen of these cleaned bottles, put them in a cold oven, standing upright; then set the oven to 248°F (120°C), when the oven reaches 248°F (120°C), set a timer for 30 minutes; after 30 minutes shut the oven off and let the bottles cool in the oven overnight, with the door shut.
Wine bottles are made of soda-lime-silica glass, not borosilicate glass, like Pyrex; therefore, if you take them out while hot, they can break due to thermal shock. , When the bottles have cooled, put them into a case box (stored upright with the foil still over the top of each bottle) and close the flaps.
They remain sterile indefinitely (as long as the foil remains in place) and are ready to go when you need them. , Remove the aluminum foil from the bottle. , Using a funnel, or siphoning tube, fill the bottle with wine until the wine level is just above where the neck starts, and then put the aluminum foil back on. , Once the bottles are filled, the next step is to pasteurize the wine in order to completely stop fermentation (if fermentation is not stopped, then the yeast will continue to produce gases that will increase the internal pressure of the bottle and can make the bottles explode during storage). ,,, The water level doesn’t have to be above the wine level in the bottles, but it should be as high as you can get it safely without it boiling out of the pot. ,, Heat the water until the temperature inside the bottle reaches 165 °F (74 °C).
This temperature kills the yeast; this temperature also kills harmful bacteria such as Salmonella, Listeria, and E. coli.
Once the temperature reaches 165 °F (74 °C), hold it at this temperature for 15 seconds, then immediately remove the bottles.
Use oven mitts on both hands and grab each bottle, with a tight grip, by the neck with one hand (not the foil, which could cause the bottle to slip out of your hand) and the bottom of the bottle with the other hand; be extremely cautious because the bottles are hot and slippery from the condensation and the wine is hot. , Keep the foil still in place during this process.
Note: if pasteurizing multiple batches, you must pour out the heated water from the previous batch.
Always start with cool water.
Never put bottles into hot water or the glass will break; the bottle and the water must be heated together to prevent thermal shock. , Once the bottles have cooled, remove the foil from one bottle and cork it; repeat until all bottles are corked.
Age some; drink some.
About the Author
Margaret Kim
Committed to making pet care accessible and understandable for everyone.
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