I’ll have to give these a try. I’ve usually done a long slow simmer with herbs but have never been entirely satisified with the results. Good but not company quality.
Yes, I have used it all the times I boil squid and octopus.
I use a good cork, that is clean, and then toss it into the compost pile after 1 use.
My octopus and squid come out tender.
Good be just folklore.
When I was in Lipari (an Aeolian island), I had great octopus. Then would fork the octopus and then dip it in rolling boiling water several times. They too used a cork.
I use a big pot, lots of water, and a good amount of salt to keep the heat up.
Toss in the cork and then add the squid or octopus.
I’m a believer.
Ciao!