In a medium saucepan, heat the milk. Whisk in the cornmeal, then whisk in the boiling water and cook over medium-low heat, stirring occasionally, until very thick, 15 to 20 minutes. Season with salt and pepper, then stir in the butter and honey.
Preheat the broiler. Meanwhile, in a large ovenproof skillet, heat the oil over medium-high heat until smoking. Add the chorizo and bacon and render the fat for 3 minutes. Stir in the pork and cook, crumbling the meat, until browned, about 8 minutes. Season with the thyme, chili powder, coriander, salt and pepper. Add the onion and garlic and cook for a few minutes to soften. Stir in the beer to deglaze for 1 minute. Add the tomatoes to heat through.
Spoon the thick cornmeal over the pan and spread evenly. Top with the cheddar and brown under the broiler for 2 minutes. Serve from the skillet, garnished with the cilantro and scallions.