|Granulated sugar||1 Cup (16 tbs)|
|Packed brown sugar||1 Cup (16 tbs)|
|Butter||1 Cup (16 tbs)|
|Corn syrup||1⁄2 Cup (8 tbs)|
|Cream of tartar||1 Pinch|
|Baking soda||1 Teaspoon|
|Freshly popped popcorn||20 Cup (320 tbs) (about 1 cup / 250 ml popping corn)|
In heavy saucepan, stir together granulated and brown sugars, butter, corn syrup and cream of tartar; bring to boil, stirring.
Boil for 5 minutes without stirring; remove from heat.
Stir in baking soda.
Place popcorn in roasting pan; pour sugar mixture over top and stir to coat well.
Bake in 200°F (100°C) oven for 1 hour, stirring every 10 minutes.
Let cool, stirring occasionally.
Store in airtight containers.