Hi all.
I like to bake, and I love sourdough.
Laucke sells packs of Barossa sourdough bread mix.
Via Coles online, I found the breakdown:
Product details
Ingredients:
Bread Mix Ingredients: Unbleached Wheaten Flour, Rye Flour (18%), Dried Wheat Sourdough (2%), Non-iodised Salt, Gluten, Soy Flour, Emulsifier (E481), Ascorbic Acid (Vitamin C), Mineral Salt (E516), Enzyme, Vitamin (Thiamine, Folic Acid).
Yeast Sachet Ingredients: Dry Yeast Incorporating Emulsifier (E491).

Allergen:
Contains Cereals, Contains Rye, Contains Wheat, Contains Gluten, Contains Soy
Quantity per serving Quantity per 100g (or 100mL) % daily intake
* Percentage Daily Intake per serving. Percentage Daily Intakes are based on an average diet of 8700 kJ. Your daily intakes may be higher or lower depending on your energy needs.
Energy 816kJ 960kJ 9%
Protein 7.7g 9.0g 15%
Total Fat 1.3g 1.5g 2%
Saturated Fat 0.5g 0.6g 2%
Carbohydrate 35.7g 42.0g 12%
Sugars 2.6g 3.0g 3%
Sodium 255mg 300mg 11%
Dietary Fibre (total) 3.8g 4.5g 13%
Trans 0g 0g 0%
Suitable For:
Baking specialty crusty breads rolls Viennas baguettes and pizza bases.
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I think that's OK, but Ingrid A. or Jack M. could point out problems I missed.
I augment the sour with my own cultures made from flour, yeast and water or non-dairy milks.

Cheers,
Michael D.