The fight is older than either sanctioning body. Texas Highways, on the state dish, names the argument in one clause: origins debated, and so is whether to serve with beans. What cook-offs added is a written line you can fail. Home pots never had to take that test.
What the rulebooks actually say
ICS, live on eatgreatchili.com: Traditional Red is meat cooked with red chili peppers, spices, and other ingredients. “No beans or fillers like rice or pasta allowed.” Homestyle is meat and/or vegetables cooked with beans, chili peppers, spices, and other ingredients. “Beans are required.” Vegetarian chili: “Beans are allowed.” The 2025 to 2026 rules PDF is more specific on Homestyle: beans are required and “should be clearly visible in cup.” People’s Choice: any type or color as long as it is homemade; beans are required.
CASI’s 2025 to 2027 rules do not offer a beans category. Section I.A.2: “NO FILLERS IN CHILI. Beans, macaroni, rice, hominy, or other similar ingredients are not permitted.” Onions, peppers, tomatoes, and garlic may appear if they are a consistent size and distributed evenly. A bean in a CASI cup is not a style choice. It is a disqualification.
Horizon West Magazine’s 2026 Central Florida Chili Cookoff report shows how those two maps sit on one lawn: teams cook a People’s Choice pot (where white chicken chili and cinnamon show up) and a traditional pot, “just meat and gravy, no beans and no fresh veggies”, for CASI points toward Terlingua. One event, two rules. The cook who wants beans is not cheating Homestyle. The cook who wants Terlingua points leaves them out.
What beans do in a pot
A bean is starch, skin, and a little sweetness. In a home pot it thickens by shedding starch and, if mashed, by turning liquid into body. Lifehacker’s thickening note is the blunt version: beans are full of thickening fiber and read as creamy rather than “bean-y” when blended, with the aside that a no-beans cook may want to skip that move. That is mechanics, not a contest brief.
In a judging cup the same mechanics become a problem. CASI wants a smooth combination of meat and gravy (the five criteria used at CASI events include aroma, red color, consistency, taste, aftertaste). A bean changes consistency, sweetness, and the look of the cup. ICS Homestyle asks for the opposite visibility: the bean should be seen. Same ingredient, opposite instruction, because the categories are different dishes.
Worked example. One afternoon, two cups
A cook following the ICS PDF makes Traditional Red with no beans and no garnish, then a second Homestyle pot with beans clearly visible. CASI would take only the first. A weeknight pot in Oklahoma, per the Historical Society’s cookbook survey, would more often look like the second. None of those three pots is “correct chili.” Each is following a different public rule.
Pinto, kidney, or none
Southern Living’s Texas chili note, quoting chef Guerra, draws a home-kitchen line that is not in ICS: you do not have to put beans in chili, but if you do, “they must be pinto beans. You certainly can’t use kidney beans.” That is one cited Texas kitchen opinion. It is not a statute.
Cincinnati treats the kidney bean as a way, not as the chili. Serious Eats: a four-way may take diced sweet onions or canned kidney beans; a five-way gets both. The beans sit on the spaghetti with the sauce. They are not cooked into the meat. Springfield, in the Tribune’s 1986 account, makes chilli “always with beans”, a parlor product, two L’s, not a Texas cup.
Oklahoma’s encyclopedia is the useful middle: Texas-style has no beans; Southerners and Midwesterners generally add them; Oklahoma compiled cookbooks generally add them. Pinto is the Southwestern default in that tradition. Kidney is the Cincinnati and much of the canned-chili default. None is the CASI and ICS Traditional default. Pick the register, then pick the bean.
Dried kidney beans are a safety rule
Cincinnati’s five-way puts canned kidney beans on the plate, not in the meat. A home pot that cooks dried red kidney beans into the chili is a different job. FDA’s Bad Bug Book: raw kidney beans carry phytohaemagglutinin; as few as four or five raw beans can trigger nausea and vomiting; slow cookers and crock pots have been tied to outbreaks because they never get hot enough. Heating around 80 °C can make the lectin worse, not better. PHLS procedure on that page: soak at least five hours, pour the soak water away, boil briskly in fresh water at least ten minutes.
Illinois Extension and UC ANR, citing the same FDA line, tell cooks to soak five hours and boil thirty minutes so the beans actually reach a rolling boil long enough. Canned kidney beans have already been processed; they do not need that boil. Do not drop unsoaked dried kidneys into a low chili simmer and call it done.
Pinto vs kidney
Pinto is the Southwestern default in Oklahoma’s encyclopedia, not the FDA’s lectin case study. No USDA or Extension page fetched here ranks pinto PHA next to red kidney. Treat dried red kidney as the named hazard. Do not invent a pinto scare to win the beans argument.
Home practice is not a loophole
López-Alt, on the Texas method page, allows a can of beans with a joke: just don’t tell anyone he told you to. That is home practice standing next to a no-beans method, labeled as such. ICS Homestyle exists because the society already knew people cook with beans. CASI exists to keep one contest chili. The catalog’s job is to keep those sentences in the same drawer without preaching.
A no-beans cup still needs body. That is chile puree and, if the method page names it, masa, not a moral about beans. Masa kit. Leftovers, beans or not, still follow USDA cooling: Dutch oven vs stockpot.