It is for that reason that the Penn State Extension urges critical warning for residence canning oils and fat, together with in relation to meats or sauces that is perhaps excessive in them. The identical will be utilized to nuts, lots of which, as a result of their excessive oil content material, can carry micro organism which can be roughly undetectable earlier than and after canning has taken place.
This contains salmonella, one of many greatest massive bads in meals contamination. Based on the Nationwide Heart for Residence Meals Preservation, moisture throughout the canning course of may open up the nuts to micro organism development similar to salmonella. In consequence, canning nuts carries a danger of potential meals poisoning.
Boltulism can also be a danger, notably for meals low in acid like nuts. The NCHFP put up recommends towards making an attempt to can nuts at residence, although it does present other ways for storing nuts, after roasting them, in sterilized canning jars with out truly placing them by means of the canning course of. Exposing the nuts to as little liquid as attainable, in addition to sterilizing the jars, helps reduce the nuts’ publicity to micro organism or molds which may discover their strategy to the nuts’ oils.