Buckwheat and mushroom quiche

Name: Buckwheat and mushroom quiche
Prep time: 10 min
Cook time: 29 h 20 min
Total time: 29 h 20 min
Yield: 8 portions
Ingredients: 80 g buckwheat groats; 1 - 2 garlic cloves; 70 g red onion; 6 sprigs fresh flat-leaf parsley; 90 g carrot; 1 celery stalk; 50 g walnuts; 1 tbsp ground coriander; 1 tbsp Bragg's® liquid aminos; 1 pinch sea salt; 3 fresh portobello mushrooms; 2 tbsp tamari; 3 tbsp extra virgin olive oil; 1 - 2 garlic cloves; 100 g raw cashew nuts; 80 g pine nuts; 30 g lemon juice; 1 pinch sea salt; 50 g fresh baby spinach leaves; 2 sprigs fresh basil; 100 g rocket