Presto Pressure Canner and cooker Operating Instructions And Recipes page 30

Altitude Adjustments
The processing times for pressure canning given in the specific recipes are for
altitudes of 304 metres or below. When processing at an altitude of 305 metres
or above, process at 103 kPa (15 psi). The processing time is the same at all
altitudes.
The processing times for boiling water canning given in the specific recipes are
for altitudes of 304 metres or below. When processing at an altitude of
305 metres or above, process according to the chart below.
Canning Recipes: Tomatoes
Tomatoes, whole or halved (packed raw without added liquid)
Wash smooth, firm, ripe tomatoes. Loosen skins by dipping tomatoes 1 minute
in boiling water, then in cold water. Peel and remove core. Leave whole or
halve. Add bottled lemon juice or citric acid to hot jars. Add salt, if desired.
Fill jars with raw tomatoes, pressing until spaces between them fill with juice.
Leave ½-inch headspace. Remove air bubbles. Prepare jar rims. Adjust two-
piece lids.
Pressure canning: Process at 69 kPa (10 psi), 500 ml and 1 litre jars for 25
minutes. When processing at an altitude of 305 metres or above, process at
103 kPa (15 psi) for the same amount of time
Boiling water canning: Process 500 ml and 1 litre jars for 85 minutes. When
processing at an altitude of 305 metres or above, see the chart above.
Wash smooth, firm, ripe tomatoes. Loosen skins by dipping tomatoes 1 minute
in boiling water, then in cold water. Peel and remove core. Leave whole or
halve, or if using large tomatoes, quarter.
Hot Pack: Place prepared tomatoes in a large pot and add just enough water
01785 4033-017A CUL English weighted gauge induction canner.indd 30 01785 4033-017A CUL English weighted gauge induction canner.indd 30
Altitude
305 to 914 metres
915 to 828 metres
1,829 to 2,438 metres
Tomatoes, whole or halved (packed in water)
to cover. Bring to a boil and boil gently for 5 minutes. Add bottled
lemon juice or citric acid to hot jars (page 29). Add salt, if desired
(page 29).
Increase Processing Time
5 minutes
10 minutes
15 minutes
30
12/13/19 10:34 AM 12/13/19 10:34 AM