Chili crisp and oils
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Chili crisp is the most commercially attractive adjacent product and the one with the most serious food safety question attached.
The hazard is different and more serious
An oil product with low-acid inclusions, garlic, shallot, chili, is not protected by acidity and is not protected by the oil. Oil excludes oxygen, which is the condition the botulism organism prefers.
Garlic in oil is the specific case with a documented history of harm, and it is the reason this product is treated carefully rather than as a seasoning.
This is not a product to develop from a recipe blog. The route is a process authority, before production rather than after, and the answer may be that it requires refrigeration or an acidification step you did not plan for.
What that means in practice
Your hot sauce scheduled process does not cover it. Water activity and pH both become part of the conversation, and the controls may include acidifying the inclusions, drying them thoroughly, or selling it refrigerated with a short life.
Each of those changes the product and the channel. A refrigerated product cannot sit on an ambient shelf and cannot ship the way a sauce does.
Packaging and separation
It separates by design: solids settle and oil rises, and that is the product rather than a fault. It needs a wide mouth jar and a spoon, not a bottle.
Oil also attacks some plastics. Polystyrene is dissolved by oil, and PET stress-cracks under some solvents, so material compatibility is a real check rather than a formality. Glass avoids the question.
The commercial case
It is a growing category, it commands a higher price than sauce, and it reaches a different customer. It also carries the highest regulatory burden of anything in this property.
Worth doing properly or not at all. This is the one adjacent product where the shortcut is genuinely dangerous rather than merely unwise.