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1
Fit a large pot with a rack, or line with a folded kitchen towel.
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2
Fill with water and bring to a boil.
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3
Add 4 half-pint canning jars and boil for 10 minutes.
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4
Jars may be left in the warm water in the pot until ready to be filled.
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5
(Alternatively, sterilize jars by running them through a dishwasher cycle, leaving them there until ready to fill.)
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6
Place canning rings in a small saucepan, cover with water and bring to a boil.
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7
Turn off heat and add lids to soften their rubber gaskets.
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8
Rings and lids may be left in the water until jars are filled.
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9
In a large, heavy pan, combine raspberries and sugar.
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10
Bring to a simmer, stirring, until sugar has dissolved.
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11
Put raspberry-sugar mixture through the fine disk of a food mill or press through a fine sieve to remove seeds.
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12
Some seeds may remain; don't worry.
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13
Return mixture to pan, add lemon juice, and bring back to a boil.
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14
Boil, stirring constantly, for 5 minutes.
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15
Add chocolate and stir well until completely melted.
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16
Boil hard for five minutes, stirring all the while.
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17
Turn off the heat, wait a minute or two, then push against the mixture.
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18
If the surface of the jam wrinkles a bit, it is the correct consistency.
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19
If not, return to the heat for another minute or two and try the wrinkle test again.
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20
Add almond extract and almonds and stir to combine.
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21
Ladle hot preserves into the warm jars, leaving 1/4 inch at the top, just below the first ring on the jars neck.
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22
Wipe jar rims clean with a damp towel.
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23
Place lids on jars, screw on rings and lower jars back into the pot of boiling water.
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24
Return to a full boil and boil the jars for 10 minutes.
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25
Transfer jars to a folded towel and allow to cool for 12 hours; you should hear them making a pinging sound as they seal.
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26
Test the seals by removing rings and lifting jars by the flat lid.
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27
If the lid releases, the seal has not formed.
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28
Unsealed jars should be refrigerated and used within a month, or reprocessed.
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29
(Rings and jars may be reused, but a new flat lid must be used each time jars are processed.)
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30
To reprocess, reheat filling to boiling point (as in Step 4), then continue as before.
