To 'rice' the cauliflower, either send it through the shredding disc on your food processor, pulse it a few times with the S blade, or grate with the large holes on a box grater. Set aside until needed.
Heat the oil in a pan, over medium heat.
Add the onion, celery and jalapeño and cook until soft, about 5 minutes
Turn the heat up to medium-high and add the cauliflower, then cook for another 5-6 minutes, until it's cooked through, but still a little crisp.
Add the garlic and cook for about 30 seconds, just until fragrant, being careful not to burn it.
Add the tomato paste, and cumin and sauté a minute or two to bring out the flavor. Add the water and bay leaf and stir.
Simmer for 5-7 minutes until water has cooked off. Season with salt and pepper. Serve. Garnish with a squeeze of lime and fresh cilantro.
Notes
Cooking tomato paste and spices brings out their flavor.Make sure to not overcook the cauliflower. It takes only 5-6 minutes for the riced cauliflower to cook.Customize it by adding different spices. Try this recipe in a burrito bowl.