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1
Pour the cola (any brand) into a pan and bring to a boil.
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2
Do not use a light version coke, the sugar is essential!
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3
Add all other ingredients, but hold back a little with the chilies at the start, add them carefully as you go.
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4
If you want to use fresh chilies instead of extract about 2 jalopenos or so will do, but you'll have more control with the extract.
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5
Also the liquid smoke is totally optional
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6
Continue boiling without a lid, you want the water to evaporate.
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7
Start tasting and adding more chili and other spices after 15 minutes or so.
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8
You'll want it pretty lethal at this point, remember that you won't be eating this straight up, only as a sauce for hamburgers, so don't be a wimp :) Take your time adjusting the taste, you can add more at any time.
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9
Continue boiling and adjust spices.
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10
When it starts to thicken after an hour or so the pan will start to spit hot sugary stuff at you, so you'll probably want to wear long sleeves and an apron... Just don't put a lid on.
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11
The whole process will take about 90 minutes.
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12
At first it seems like nothing happens, but near the end it will thicken faster, so keep an eye on it.
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13
Take the sauce off the stove and pour it into a small bowl to cool when the consistency is somewhat like runny syrup.
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14
It will thicken more when it cools down.
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15
The end product will be about 3-4dl (1 1/2 cups)
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16
Use as sauce on hamburgers, about a teaspoon or two per burger is enough for most people.
