• Nora@lemmy.ml
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    9 months ago

    Just heat up the lid a little bit.(if the lid is metal)

    You can use hot water, although I have found rolling the lid on my electric stove for 10-20 seconds works better because then it’s not wet after.

    • fastandcurious@lemmy.worldOP
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      9 months ago

      I wonder if they actually use the same trick to actually put the lid on as-well to create as-tight of a seal as possible

      • Alexstarfire@lemmy.world
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        9 months ago

        I assume all parts are heated first because that’s how you ensure it’s sterile. It also serves to make a slight vacuum once cooled which will keep everything sealed.