Ingredients
Method
- Combine sugar, corn syrup, heavy cream, and sour cream in a heavy-bottomed saucepan. Bring to a boil while stirring.
- Clip on a candy thermometer and continue heating until 240 °F (115 °C).
- Remove from heat. Quickly stir in cold butter cubes until glossy and melted.
- Stir in vanilla and sea salt, then fold in any mix‑ins.
- Pour into lined 8×8 pan, chill for 2 hours, then cut into squares.
Notes
Use a lined pan for easy removal; store fudge airtight at room temp or freeze it for later.