Preheat oven to 160 ºC. Place the almonds on a baking sheet and roast in the oven for approx 15 minutes, taking care not to burn them. Remove from the oven and allow to cool
Add the sugar or "panela", the lemon rind and the cinnamon to a food processor and whizz for a couple of minutes or so, until the sugar is finer in texture.
Add the roasted almonds and process until the almonds start to release their oil, scraping down the sides of the food processor as necessary. This can take a good few minutes.
Line a mould, first with a piece of kitchen paper, then with baking paper and press the almond paste in firmly with a spoon. The turrón should be between 1 to 2 centimetres thick.
Sprinkle with a teaspoon of cinnamon more or less, cover with the surplus baking paper, then with one more piece of kitchen paper
Place a heavyish object on top (a carton of milk or a bag of rice) and place in the fridge for a couple of days. It's now ready to eat.
Wrap in the papers, then in tin foil or place in an airtight container and store in the fridge.