Grown-Up Natillas

• 1/2 tbsp Instant coffee
• 1 tbsp Water
• 2 biscuits Biscuit (I used Marie biscuit)
• 250 ml Milk
• 1/4 Lemon zest
• 1 Egg yolk
• 1 1/2 tbsp Sugar
• 1/2 tbsp Katakuriko (or cornstarch)
• 1 tsp Rum
• 1 Cinnamon

1. Mix the ingredients and make a strong coffee in a bowl.
2. Soak the biscuit.
3. In a separate bowl, place the biscuit from Step 1 at the bottom.
4. If you like the coffee flavor, you can add the remaining coffee from Step 1.
5. Put the milk and lemon zest in a sauce pan.
6. Warm until just before it starts to boil and milk is infused with lemon zest.
7. Put the ingredients marked into a bowl and mix well.
8. Add the milk from Step 3 into the mixture of Step 4, and mix well.
9. Discard the lemon zest.
10. Put the mixture of Step 5 back into the sauce pan and simmer over low heat until it thickens (stir constantly with a wooden spatula to keep the natillas from burning).
11. When Step 6 has cooled, add the rum.
12. Pour into the bowl of Step 2.
13. Chill very well in the refrigerator.
14. Serve the natillas sprinkled with cinnamon.

coffee, water, milk, lemon zest, egg yolk, sugar, katakuriko, cinnamon

Taken from cookpad.com/us/recipes/153755-grown-up-natillas (may not work)