2.5. Stevia Natural Sweetener Sugar Free Cola
This recipe is credited to Dr. Udo Kienle. It uses a sugar substitute but gives more details about the mixing process.
Ingredients (makes 1 litre of syrup):
0.07 kg/ l Stevia Natural Sweetener 6.0 ml/l Salt Solution
108.5 ml/l Cola Flavor Base (see below) 5.0 ml/l Citric Acid Solution, 50%
8.5 ml/l Phosphoric Acid, 85% 872.0 ml/l Processed Water
0.007 kg/l Caramel, acid proof
Flavour Base (makes 1 litre of flavour base):
1.32 g/l Vanilla Extract* 21.94 g/l Caffeine
4.29 g/l Solid Extract Kola nuts* 25.00 g/l Lime oil extract
41.74 g/l Cola Flavour Emulsion (see below) 75.56 g/l Phosphoric Acid, 85%
158.52 g/l Caramel, acid proof 671.63 g/l Processed water
* A separate recipe is required for the extracts.
Cola Flavour Emulsion (makes 1 litre of flavour emulsion):
119.94 g/l Orange Oil Emulsion (see below) 2.64 g/l Oil of Lime, distilled
89.82 g/l Arabic Gum 2.64 g/l Oil of Orange, cold pressed
13.21 g/l Oil of Cinnamon 1.32 g/l Oil of Coriander
6.60 g/l Oil of Lemon, cold pressed 763.83 g/l Processed Water
Directions:
1. Combine the essential oils (except the orange oil), add magnesium carbonate and filter.
2. Prepare orange oil emulsion and Arabic gum by heating the orange oil up to 60 °C for ˝ hour. Remove the oil from the heat and slowly add the Arabic gum. Stir for 15 minutes.
3. Add the essential oils to the orange oil mixture, then add the water and keep agitating for another 15 minutes.
4. Homogenize the mixture at 211 kg/cm2.
Notes: There is no mention in the ingredients of magnesium carbonate. It probably refers to using very fine magnesium carbonate as a filtering aid. When filtering a 'slimy' substance a very fine inert powder can be used to prevent the filter from becoming clogged. 211 kg/cm2 is the pressure to which a "homogenizer"