Canning Tomatoes
Quality: Select only disease-free, preferably vine-ripened, firm fruit for canning.
Caution: Do not can tomatoes from dead or frost-killed vines. Green tomatoes are more acidic than ripened fruit and can be canned safely with any of the following recommendations.
Acidification: To ensure safe acidity in whole, crushed, or juiced tomatoes, add two tablespoons of bottled lemon juice or 1/2 teaspoon of citric acid per quart of tomatoes. For pints, use one tablespoon bottled lemon juice or 1/4 teaspoon citric acid. Acid can be added directly to the jars before filling with product. Add sugar to offset acid taste, if desired. Four tablespoons of a 5 percent acidity vinegar per quart may be used instead of lemon juice or citric acid. However, vinegar may cause undesirable flavor changes.
Recommendation: Use of a pressure canner will result in higher quality and more nutritious canned tomato products. If your pressure canner cannot be operated above 15 PSI, select a process time at a lower pressure.
Quantity: An average of 21 pounds is needed per canner load of 7 quarts; an average
of 13 pounds is needed per canner load of 9 pints. A bushel weighs 53 pounds and yields 15
to 21 quarts-an average of 3 pounds per quart.
Procedure: Wash tomatoes. Dip in boiling water for 30 to 60 seconds or until skins
split, then dip in cold water. Slip off skins and remove cores. Leave whole or halve. Add
bottled lemon juice or citric acid to the jars (See acidification instructions). Add 1 teaspoon of
salt per quart to the jars, if desired.
Raw pack -- Heat tomato juice in a saucepan. Fill jars with raw tomatoes, leaving
1/2-inch headspace. Cover tomatoes in the jars with hot tomato juice, leaving 1/2-inch
headspace.
Hot pack -- Put tomatoes in a large saucepan and add enough tomato juice to completely
cover them. Boil tomatoes and juice gently for 5 minutes. Fill jars with hot tomatoes, leaving
1/2-inch headspace. Add hot tomato juice to the jars to cover the tomatoes, leaving 1/2-inch
headspace. Adjust lids and process according to the recommendations in Table 1, Table 2, or Table 3 depending on the method used.
| Table 1. Recommended process time for Whole or Halved
Tomatoes (packed in tomato juice) in a boiling-water canner. |
|
Process Time at Altitudes of |
| Style of Pack |
Jar Size |
0 - 1,000 ft |
1,001 - 3,000 ft |
3,001 - 6,000 ft |
Above 6,000 ft |
| Hot |
Pints or Quarts |
85 min |
90 |
95 |
100 |
| Table 2. Recommended process time for Whole or Halved
Tomatoes (packed in tomato juice) in a weighted-gauge pressure canner. |
|
Canner Gauge Pressure (PSI) at Altitudes |
| Style of Pack |
Jar Size |
Process Time |
0 - 1,000 ft |
Above 1,000 ft |
| Hot |
Pints |
40 min |
5 lb |
10 lb |
| or |
25 |
10 |
15 |
| Quarts |
15 |
15 |
Not Recommended |
| Table 3. Recommended process time for Whole or Halved Tomatoes
(packed in tomato juice)
in a dial-gauge pressure canner |
|
Canner Gauge Pressure (PSI) at Altitudes of |
| Style of Pack |
Jar Size |
Process Time |
0 - 2,000 ft |
2,001 - 4,000 ft |
4,001 - 6,000 ft |
6,001 - 8,000 ft |
| Hot and Raw |
Pints or |
40 min |
6 lb |
7 lb |
8 lb |
9 lb |
| Quarts |
25 |
11 |
12 |
13 |
14 |
Whole or Halved Tomatoes (packed in water)
Quantity: An average of 21 pounds is needed per canner load of 7 quarts; an average
of 13 pounds is needed per canner load of 9 pints. A bushel weighs 53 pounds and yields 15
to 21 quarts-an average of 3 pounds per quart.
Procedure for hot or raw tomatoes filled with water in jars: Wash tomatoes. Dip in boiling
water for 30 to 60 seconds or until skins split; then dip in cold water. Slip off skins and remove
cores. Leave whole or halve. Add bottled lemon juice or citric acid to jars (See acidification
directions). Add 1 teaspoon of salt per quart to the jars, if desired. For hot pack products, add
enough water to cover the tomatoes and boil them gently for 5 minutes. Fill jars with hot
tomatoes or with raw peeled tomatoes. Add the hot cooking liquid to the hot pack, or hot water
for raw pack to cover, leaving 1/2-inch headspace. Adjust lids and process according to the
recommendations in Table 4, Table 5, or Table 6, depending on the method of canning used.
| Table 4. Recommended process time for Whole or Halved
Tomatoes
in a boiling-water canner. |
|
Process Time at Altitudes of |
| Style of Pack |
Jar Size |
0 - 1,000 ft |
1,001 - 3,000 ft |
3,001 - 6,000 ft |
Above 6,000 ft |
| Hot |
Pints |
40 min |
45 |
50 |
55 |
| Quarts |
45 |
50 |
55 | 60 |
| Table 5. Recommended process time for Whole or Halved
Tomatoes
in a dial-gauge pressure canner |
|
Canner Gauge Pressure (PSI) at Altitudes of |
| Style of Pack |
Jar Size |
Process Time |
0 - 2,000 ft |
2,001 - 4,000 ft |
4,001 - 6,000 ft |
6,001 - 8,000 ft |
| Hot |
Pints or |
20 min |
6 lb |
7 lb |
8 lb |
9 lb |
| Quarts |
10 |
11 |
12 |
13 |
14 |
| Table 6. Recommended process time for Whole or Halved
Tomatoes
in a weighted-gauge pressure canner. |
|
Canner Gauge Pressure (PSI) at Altitudes |
| Style of Pack |
Jar Size |
Process Time |
0 - 1,000 ft |
Above 1,000 ft |
| Hot |
Pints |
15 min |
5 lb |
10 lb |
| or |
10 |
10 |
15 |
| Quarts |
10 |
15 |
Not Recommended |
Whole or Halved Tomatoes (packed raw without added liquid)
Quantity: An average of 21 pounds is needed per canner load of 7 quarts; an average
of 13 pounds is needed per canner load of 9 pints. A bushel weighs 53 pounds and yields 15
to 21 quarts-an average of 3 pounds per quart.
Procedure: Wash tomatoes. Dip in boiling water for 30 to 60 seconds or until skins
split, then dip in cold water. Slip off skins and remove cores. Leave whole or halve. Add
bottled lemon juice or citric acid to the jars (See acidification instructions). Add 1 teaspoon of
salt per quart to the jars, if desired. Fill jars with raw tomatoes, leaving 1/2-inch headspace.
Press tomatoes in the jars until spaces between them fill with juice. Leave 1/2-inch headspace.
Adjust lids and process according to the recommendations in Table 7, Table 8, or Table 9,
depending on the method of canning used.
| Table 7. Recommended Process Time for Whole or Halved
Tomatoes (packed raw without added liquid) in a Weighted-Gauge Pressure Canner |
|
Canner Gauge Pressure (PSI) at Altitudes of |
| Style of Pack |
Jar Size |
Process Time |
0 - 1,000 ft |
Above 1,000 ft |
| Hot and Raw |
Pints |
40 min |
5 lb |
10 lb |
| 25 |
10 |
15 |
| Quarts |
15 |
15 |
Not Recommended |
| Table 8. Recommended Process Time for Whole or Halved
Tomatoes (packed raw without added liquid) in a Boiling-Water Canner |
|
Process Time at Altitudes of |
| Style of Pack |
Jar Size |
0 - 1,000 ft |
1,001 - 3,000 ft |
3,001 - 6,000 ft |
Above 6,000 ft |
| Raw |
Pints or Quarts |
85 min |
90 |
95 |
100 |
| Table 9. Recommended Process Time for Whole or Halved
Tomatoes (packed raw without added liquid) in a Dial-Gauge Pressure Canner |
|
Canner Gauge Pressure (PSI) at Altitudes of |
| Style of Pack |
Jar Size |
Process Time |
0 - 2,000 ft |
2,001 - 4,000 ft |
4,001 - 6,000 ft |
6,001 - 8,000 ft |
| Raw |
Pints or Quarts |
40 min |
6 lb |
7 lb |
8 lb |
9 lb |
| 25 |
11 |
12 |
13 |
14 |
|
|