Cut bacon into roughly 1cm cubes and place in large pot. Cook until golden then strain from fat and remove. Remove fat, reserving approx. 2 tbsp in pot.
Add onion to pot and cook for 3 minutes before adding red bell pepper. Another 2 minutes and add jalapenos and fresno chillies. Cook for 3 more minutes before adding spices.
Cook for 1 minute before returning bacon to the pot along with sugar, syrup, and vinegar. Stir well then allow to cook on medium-low for approx. 90 minutes.
Continue to cook until jam reaches desired consistency, keeping in mind it will thicken once cooled. Salt to taste.
Will last 2-3 weeks in the fridge.
Source:
https://www.youtube.com/watch?v=MeJTZ01YaO0