In a large soup/stew pot over medium/high heat, cook (and crumble) the Italian sausage to a deep golden brown.
Add the onions, chili powder, cumin, paprika, coriander, garlic, and red pepper flakes and cook together, stirring occasionally until the onions soften slightly (approximately 5 minutes).
Reduce the heat to low and add the drained kidney and pinto beans. Stir.
Add the tomato paste and stir to combine. Cook for 1-2 minutes.
Add the crushed tomatoes, diced tomatoes, and the beer and stir well.
Bring the pot of chili to a low simmer, stirring occasionally for at least a half an hour (but longer is better).
before serving, stir in the small can or fire roasted jalapenos and remove from heat.
Serve in bowls with garnishes, if desired.