You know all of those cooking shows and recipes (ahem, like ones on this very site — guilty!) that suggest cooking with wine is really fun because once you’ve opened a bottle for cooking, you get to drink the rest? Then there’s a series of “ah-ha-ha!”s and LOLs; it’s all very raucous. And look, people, I love a glass of wine with dinner from time to time but fact is, a lot of the time I open a bottle of wine for cooking, we forget to finish it, and this makes me very, very sad.

Enter dry vermouth. (The other variety of vermouth, usually red or pink, is called “sweet,” I like that, in part, for Manhattans, not that you asked.) Vermouth is a fortified white wine that is mildly aromatized with a variety of “botanicals,” such as herbs, spices, and fruits. Apparently, the word vermouth is derived from the German word for wormwood, wermut, as wormwood was the chief flavoring ingredient for vermouth until the herb was found to be poisonous, which I am sure was tremendously awkward. Nevertheless, the main reason I like to have vermouth around is its shelf life. When stored in the fridge (and you should, because this extends its shelf life), dry vermouth is good for anywhere between three and six months. (Sweet vermouth will keep for a year this way.) This means if you need just a splash here or there for a recipe, you don’t have to uncork a bottle of wine you may not finish before it quickly turns. Vermouth is also a lot less expensive than drinking wines. Gallo, the favorite in a Cook’s Illustrated taste test, costs only $5 for a 750ml bottle. The fancy-pants Dolin brand I picture above, almost considered too nice for everyday cooking, was $16.

A few usage notes: Vermouth’s flavor is of course a little different from a straight white table wine, due to the herbs and spices, so it may not be for everyone, but I find it to be lovely when cooking savory dishes. Due to the fortification, vermouth has a slightly higher percentage of alcohol than white wine (16 to 18 percent versus wine’s 12.5 to 14.5 percent), which means if you’re trying to partly “cook off” the alcohol it may need an extra minute of simmering time. But I find that it can be seamlessly interchanged with wine in just about any recipe, and deliciously so.

Have you ever used Kosher salt in a recipe and found the end result to be like a salt lick and you couldn’t imagine how on earth a recipe tester could have not noticed how horribly, horribly oversalted the dish would end up? Let me guess: you were using Morton Kosher Salt. Guess what the recipe tester was probably using? Diamond Kosher Salt. And I know what you’re thinking: Now you tell me!

Believe it or not, I only learned about this disparity weeks ago but I had suspected something was wonky for a while. I use Diamond Kosher Salt so I hadn’t run into the issue but I’ve often received comments that people found even a lightly-salted dish way over the top. In short, Morton and Diamond are made differently; Morton salt presses salt granules into large flakes with rollers; Diamond, through a patented process, stacks salt pyramids to form a large crystal — one is dense, the other is like a snowflake. One is intensely salty for its volume, the other has an expected level of saltiness.

So how to adjust for this in recipes where one is measuring salt by volume? A cup of Morton’s salt can weigh almost twice as much as a cup of Diamond’s salt, and therefore taste twice as salty. The intrepid Jill Santopietro at Chow.com came up with the following equation simply by weighing the salts:

1 teaspoon fine sea or table salt = roughly 1 1/4 teaspoons Morton’s kosher salt = roughly 1 3/4 teaspoons Diamond Crystal kosher salt

“Uh, Deb, are we supposed to memorize that?” Of course not. Basically, you can think of a teaspoon of fine sea salt, regular old table salt or Morton salt as just about equivalent in salty impact. If you’d like to use Diamond kosher salt instead of table or sea salt in a recipe, use double. [Updated to clarify]

“But aack, this stresses me out because how am I supposed to know what a recipe tester used?” Here’s my advice: Pretend they used Diamond salt. You can always increase the amount of salt later (and hey, isn’t “salting to taste” the best way to cook, anyway?) but good luck scrubbing it out.