Simple is good. I bought a tupperware container that's longer than the herring. A couple small handfuls of rock salt. Some water, but not so much as will overtop after the herring are added. Add herring. A few drops of Mrs. Stewart's. If there's still room, add water until it's about 1/2" from the top. Secure lid. Shake a bit. Put in fridge. Put note on coffee pot to not forget the bait in the morning!

Sg