Locro dulce (sweet corn porridge)

Instructions

1. Soak the cracked corn in the water for 30 minutes to soften it.
2. Bring the water and corn to the boil in a saucepan, then lower the heat and simmer for 20 minutes, stirring often.
3. Add the milk, the cinnamon stick, the lemon zest and a pinch of salt.
4. Cook for a further 15 minutes over low heat until creamy, stirring regularly so it doesn't stick.
5. Add the sugar and stir until dissolved, then remove the cinnamon stick and the zest.
6. Serve warm, with the raisins added at the last minute if you're using them.