Although a naturally flavors soda is nice some times it's good to have a solid strong soda flavor. You can find extracts in limited flavors but I have found a great source of flavors...has some vitamin c in it...what do you ask? I say WHO should you ask!
HEY KOOL-AID!
You need
2 cups (14.5 oz) sugar
1/8 tsp champaign yeast
Water
Kool-aid flavor packet - the one sugar is added to
2 liter bottle
2 liters of water
Measuring cups funnels ect...
Here's the process I use
Heat 2 cups of water till boil


Measure 2 cups - 14.5 oz sugar

Take water off heat let boil come to rest and add sugar mixing till completly dissolved.


Once dissolved cool to 100-105

In 1 cup of water bloom 1/8 tsp champaign yeast by adding to water around 100-105 degrees and let hydrate for 5 min.


Pour sugar syrup into bottle

Fill Half way with water and shake well
Pour yeast into bottle and top off to about 1 inch under the neck Of the bottle. Shake well

Add flavor packets and shake well....let sit for 20 min and shake well again
Let set at room temp 68-70 for 48 hours or until pressurized at same level as store bought soda and chill over night




