Choosing and Using Fats for Baking
Fat is the variable that determines structure, moisture, and how quickly a baked good goes stale. Butter provides flavor and layers in laminated doughs, shortening builds height and stability, and liquid oils keep cakes and muffins tender for days by coating flour proteins to inhibit gluten development.
Temperature dictates the outcome.
The physical state of your fat at the moment of mixing is as important as the fat itself. Cold fat creates steam pockets for lift, while room-temperature fat captures air when creamed.
- Digital scale
- Bench scraper
- Pastry blender
What goes in.
- 1 cupUnsalted butter (82% fat minimum)
- 1 cupVegetable oil (neutral)
- 1 cupLard or leaf lard
Creaming vs. Cutting
Creaming butter and sugar forces tiny air bubbles into the fat matrix for a leavened crumb. Cutting cold fat into flour creates discrete layers that turn into steam-driven flakes during baking.
The method.
Working with cold fat
Keep butter near 65°F. If it smears before you get it into the oven, the layers will fuse into a greasy mass rather than puffing.
Creaming room-temp fat
Beat butter and sugar until the texture changes from yellow and dense to pale and aerated. This takes 3-5 minutes on medium speed.
Incorporating oils
Use oil when you want a compact, moist crumb. Because oil is 100% fat and liquid at room temperature, it never sets into a solid structure like butter.
When it doesn't go to plan.
Use high-fat butter (84% or higher) for pastry work; it contains less water, leading to crispier results.
If your butter gets too warm while cutting it into flour, put the whole bowl in the freezer for ten minutes.
Oils with strong flavors like toasted sesame or unrefined coconut will dominate your final product; stick to neutral oils unless the flavor profile calls for otherwise.
The ones that keep coming up.
Can I swap butter for oil?
Only if the recipe relies on the creaming method or structural support of solid fats. Swapping in a cake might work, but you will lose the aeration and richness.
Why does my pie dough get tough?
You likely over-worked the dough after adding water, or your fat melted before it hit the oven, causing it to coat the flour completely rather than stay in distinct streaks.
How real cooks make it.
No one’s shared their version yet. Be the first to put your kitchen on the map.
Cook this your way?
Share your version — your steps, your story. We’ll feature it right here.
Add your recipe