All you need to do is throw the can into hot water, let it simmer for a minute or two, open the can, and voilà!
Heat rapidly back to the boil, then simmer gently, partially covered.
Add the butter, chicken stock, salt, bay leaf, thyme, and tarragon and bring to a simmer.
Bring the water to a boil, then lower the heat and simmer for 10 minutes, or until the potatoes are easily pierced with a fork.
Reduce the heat to medium-low and simmer until the mixture starts to become syrupy and dime-size bubbles form, 12 to 15 minutes.
Season highly with salt, pepper, and cayenne, and let simmer for six or eight minutes.
Then put in the strained blood and simmer it for another hour, at least.
simmer it gently for eight hours in a quart of water, till reduced to a pint and half, and skim it clean while it is doing.
Cover it close, set it on hot coals, and let it simmer about an hour.
Cover the stew-pan, and simmer them slowly till they are tender.
1650s, alteration of simperen "to simmer" (late 15c.), possibly imitative; not thought to be connected to simper (v.). OED says the change is "probably due to a feeling of phonetic appropriateness." Figurative sense, of feelings, "to be agitated" is from 1764. Opposite sense, in simmer down, first recorded 1871, probably from the notion of moving from a full boil to a mere simmer.
I must and will keep shady and quiet till Bret Harte simmers down a little. [Mark Twain, letter, 1871]Related: Simmered; simmering. The noun meaning "a condition of simmering" is from 1809.