Traditional Butterscotch
Butterscotch is a slow-cooked syrup of brown sugar and butter, emulsified with heavy cream to reach a rich, pourable consistency. It relies on the depth of molasses in dark brown sugar, cooked until the mixture turns from a sandy emulsion to a smooth, deep amber ribbon.
Patience prevents graininess.
Keep a small bowl of cold water and a pastry brush nearby to wash down any sugar crystals that cling to the sides of the pan. This keeps the texture smooth.
- Heavy-bottomed saucepan
- Whisk
- Heat-resistant silicone spatula
- Candy thermometer (optional)
What goes in.
- 1 cupDark brown sugar, packed
- 4 tbspUnsalted butter
- 1/2 cupHeavy cream
- 1 tspVanilla extract
- 1/4 tspFine sea salt
Maintaining the Marriage
When adding cream to hot sugar and butter, do it in a slow, steady stream while whisking constantly. If the fat separates, remove the pan from the heat and whisk vigorously until it pulls back together.
The method.
Melt the base
Place the butter and brown sugar in a heavy-bottomed saucepan over medium heat. Whisk until the butter is fully absorbed and the mixture begins to bubble.
Deepen the color
Let the mixture simmer undisturbed for 3-4 minutes. Watch for the color to shift to a dark, toasted mahogany. Do not walk away; sugar turns from toasted to burnt in seconds.
Temper the cream
Lower the heat. Slowly pour in the cream while whisking constantly. The mixture will steam and foam violently; stay steady with the whisk until the foam subsides and the texture is glossy.
Finish and cool
Remove from heat immediately. Stir in the vanilla and salt. Let it rest for 10 minutes before pouring into a glass jar; it will thicken significantly as it loses heat.
Other turns to take.
Salted Butterscotch
Increase the sea salt to 1/2 teaspoon and sprinkle a pinch of flaky finishing salt over the top once poured into the jar.
Spiced Butterscotch
Steep one whole star anise or a small cinnamon stick in the cream before adding it to the sugar base.
When it doesn't go to plan.
If you see dark specks of burnt sugar, strain the sauce through a fine-mesh sieve immediately.
Warm a jar of hardened butterscotch in a water bath to return it to a pourable consistency.
Use dark brown sugar rather than light for a deeper molasses profile.
The ones that keep coming up.
How do I know if the butterscotch is cooked enough?
If you don't have a thermometer, look for the 'ribbon stage.' When you lift your whisk, the sauce should flow in a thick, continuous stream rather than dripping like water.
My butterscotch is grainy. What happened?
Crystals likely formed on the side of the pan and fell back in. Always wipe the sides with a damp brush during the melting phase.