I have a few that helps me.
If you can’t use self canned tomatoes only use whole canned tomamatoes for more flavor. Trust me, you can take the extra time to quarter them.
Use chuck hamburger not to lean and not to greasy. Also when browning meat add spices at the end of browning to let the spices bloom for a while. Most important i feel.
Ad fresh peppers towards the end, I use serreno pepper, until aldenta chewy with a bit of snap.
Uses dried Chipotle peppers, not the canned stuff, you will get that smoked spicy flavor.
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