I have figured out how to make poured fondant icing that is close to the one I normally buy. It is not true white, but almost. I used a danish recipe that is close to the one from chef but with glucose syrup instead of light corn syrup.
This is what I use:
Click here for the recipe from CHEF
Sugar
Water
Glycose syrup
Casserole
Candy-thermometer
Heavy-duty mixer with paddle attachment
2 plastic bags
A spoon
Step 1:
In a casserole add sugar, glycose syrup and water. Put in the candy-thermometer so that you can monitor the temperature.

Step 2:
Give the sugar mixture a quick stir and heat it up to the “soft-ball” stage (238°F; 114°C). The mixture needs to be heated as fast as possible, to prevent the sugar from turning brown, so dont be affraid to put the cooking plate on max. When it reaches the needed temperature you remove it from the heat.

Step 3:
Carefully pour the “sugar syrup” into the mixing bowl. Let it cool until it reaches 140°F (60°C).

Step 4:
When the “sugar syrup” has reached 140°F (60°C) start the mixer and let it beat in a slow/medium speed. Do not leave it unattended.

Step 5:
When the “sugar syrup” is turned into a thick “dough” it is done. It should look like on the picture.

Step 6:
Get the fondant out of the mixing bowl and double wrap it in plastic bags. Let it rest for 24 hours, in a dry and cool place, and it is ready for use.

IMPORTANT NOTE: Remember to pay close attention when you beat the “sugar syrup”. When it gets thick and creamy it can harden in no time and your paddle attachment could “freeze” into the mixture and you could end up with a broken mixer.
But as long as you only beat on slow/medium and stop to check once in a while it should be fine. Remember to be carefull when handling the hot “sugar syrup”
You can read more on how to cover cupcakes with poured fondant here.
Happy Caking
Louise