- Why did the sauce become grainy?
- You likely cooked the cheese at too high a heat, or it wasn't fatty enough. The cheese proteins seized up.
- Can I use pre-grated cheese?
- Not recommended. Shop-bought grated cheese has anti-caking powder (starch) which prevents the sauce from being completely smooth and glossy.
- It became too thick, what should I do?
- Stir in a little more warm milk until it reaches the desired consistency.
Jalapeño Cheese Sauce
This sauce isn't simply melted cheese, but a classic Béchamel-based sauce made famous by Tex-Mex cuisine. The secret lies in the flour-butter base (roux), which stabilises the milk so the cheese doesn't split but forms a creamy, velvety emulsion. The acidity and heat of the jalapeño are needed to cut through the fatty richness of the cheese, making every bite feel fresh.
Ingredients
200
g
Cheddar cheese (block, freshly grated)
50
g
Jalapeño peppers (sliced, or fresh diced)
30
g
Butter (room temperature)
200
ml
Milk (at least 2.8% fat)
20
g
Plain flour
1
clove
Garlic (finely grated)
0.5
tsp
Salt
0.25
tsp
Pepper (freshly ground)
Shopping List (0)
Equipment Needed
- Heavy-based saucepan (for even heat distribution)
- Whisk (for lump-free sauce)
- Cheese grater (for fresh grating)
- Chopping board and knife
Allergen Information
Milk
Cereals containing gluten
Instructions
1
✓
Prepare the ingredients: grate the cheese and garlic, and finely chop the jalapeño.
Tip: Always grate cheese when cold so it doesn't smear, but let it warm to room temperature before use to melt easier.
2
✓
Melt the butter in a medium saucepan over medium heat. When foaming, add the flour and stir continuously for 1-2 minutes until pale biscuit coloured.
Tip: This is called a roux. It's important to cook the flour a little (cook out the raw taste), otherwise the sauce will taste floury.
3
✓
Gradually pour the milk into the butter-flour mix in small batches while whisking continuously and quickly.
Tip: If you pour the milk in all at once, it will clump. Gradual addition is key to a smooth texture (emulsion).
4
✓
Cook the sauce on low heat until thickened (approx. 3-4 minutes), then remove from the heat.
Tip: Definitely lower the heat or remove from the hob before adding the cheese, as high heat causes cheese to split.
5
✓
Stir in the grated cheese a handful at a time until completely melted and uniform. Then add the garlic and jalapeño.
Tip: The intensity of flavour may vary depending on the maturity of the cheddar.
6
✓
Season with salt and pepper. Taste and correct if necessary.
Tip: Be careful with salt as the cheese can be salty itself.
7
✓
Serve immediately warm with tortilla chips or vegetables.
Tip: As it cools, the sauce will form a skin on top; prevent this by stirring or covering with foil.
Recipe FAQ
Ingredients
- 200 g Cheddar cheese (block, freshly grated)
- 50 g Jalapeño peppers (sliced, or fresh diced)
- 30 g Butter (room temperature)
- 200 ml Milk (at least 2.8% fat)
- 20 g Plain flour
- 1 clove Garlic (finely grated)
- 0.5 tsp Salt
- 0.25 tsp Pepper (freshly ground)