In a cute lil' saucepan, mix water and corn syrup. Sugar, you're next, but be gentle—no splashin'!
Crank that stove to medium. Once it's boiling, slap a lid on there for a minute. It's like a sauna for the sugar; anything stickin' to the sides will melt back down.
Off with the lid! Pop a candy thermometer on the pan's side. Cook this sugary wonder till it hits 320°F. It'll start turning this beautiful amber.
Warning: Next step's gonna be a wild ride! Slowly pour in a bit of your cream and butter mix—like one-sixth—and stir it in like a tornado. Keep goin', addin' and stirrin' till it's all in. Watch it bubble like a witch's cauldron, but keep it from spilling, alright?
You're not done yet, sugar. Cook it some more, like 5 to 10 minutes, until it hits 240°F. Want 'em a little tougher? Aim for 245°F.
Pour it in your prepped pan. Let it chill for like 20-30 minutes, then sprinkle that sea salt like fairy dust. Give it 3 1/2 hours to firm up—don't rush perfection.