Muffins

I've not had much success doing muffins here in Spain. It must be the ingredients (maybe the flour?); it certainly couldn't be me could it?

Here's some muffin ingredients that seem to have finally worked (24 minutes @ 180C):

• Flour
• Sugar
• Blueberries (15% by total weight)
• vegetable oil
• dextrose (a.k.a. sugars)
• modified starch (tapioca & cornstarch)
• raising agents
• sodium bicarbonate
• sodium aluminum phosphate
• wheat gluten
• emulsifiers:
• E477, Propane-1, 2-diol esters of fatty acids, propylene glycol esters of fatty acids
• E471, Mono- and diglycerides of fatty acids (glyceryl monostearate, glyceryl distearate)
• E481, Sodium stearoyl-2-lactylate
• salt
• stabiliser: xanthan gum
• flavorings
  
  
• plus
• 1 egg (medium)
• 110 ml milk
• 30 ml vegetable oil

Yes, it's a mix! For shame!

But, but, but... I'm doing this as an experiment; to have a muffin
that's a baseline for my future attempts. I will also be going to get a
Starbuck's blueberry muffin for further comparison.

This is how they turned out: taste is okay but too dense a grain.