Put a pot of water on the stove, add a tablespoon of coarse salt, cover with a lid and bring to a boil.
Wash the red cabbage, cut it in half and then into thin strips.
Put in tall container the cabbage strips, the almonds, the clove of garlic, the salt and olive oil.
When the water starts boiling pour the pasta, mix it and cook uncovered for 10 minutes.
Meanwhile prepare the pesto by blending with an immersion blender the ingredients in the tall container; add some pasta cooking water a little at a time until you get a creamy pesto.
Drain the pasta and dress with the raw red cabbage and almonds pesto.
Add olive oil and freshly ground black pepper to taste and serve.
Note
The pesto may be prepared in advance and stored in the refrigerator, in a glass jar or in an airtight container, up to 3 or 4 days. Besides being a great sauce for pasta, this cabbage pesto is also great with toasted bread for a tasty bruschetta.