Recipes that only call for a small amount of buttermilk can be frustrating since it is only sold in quart sized containers. To save buttermilk, simply measure out 1 cup amounts and pour into ice cube trays and freeze. Once frozen, store in freezer bags until needed. Then, thaw in the refrigerator or microwave and blend to reconstitute.
Is the interior of your Dutch Oven stained brown? Do you have burn spots on your stainless steel pots? Use Bar Keepers Friend, water, and elbow grease to remove. In general, try cooking with fats (oil and butter) at lower heats. If you're needing to char something, opt for a cast iron.