Hello there! I'm new to this forum
Originally I was born and raised in Munich, Bavaria, but spent most of my time in the UK after my degree in London. I am by no means an expert when it comes to a decent Hefeweizen, but I heard that many breweries use lager yeast to prime a Hefeweizen, alhough this is no done by all. I cannot say what Erdinger does, but I know that Schneider Weisse uses their own yearst strains and primes the bottles with the same. It's a pretty good wheat beer too (I prefer it to the Erdinger TBH).
Here is a receipe for a 'Dunkeles Hefeweizen' from one of my German books
2600g Dark Wheat Malt
1500g Munich Malt
300g Caramalt (dark)
40g Roasted Malt (Farbmalz)
Hops
8g Bittering Hops (8,0 %AA)
15g Aroma Hops (6,0 %AA)
90 min boil
3 step dekoktion mash
OG = 11,8% B
20 EBU, 35EBC, ABV 4,8%, Bottle at 3.3%B
We never use priming sugar, only the sugars we already made in the wort. One method I like is the principle of 'Schnellvergaerungsprobe' (what a long word!). A rapid-fermenting-sample, liberally translated. Once the yeast has gone active, say after 24hrs, I take a small sample in a jar. this sample I then put in a waterbath at around 40-60C MAX!!! (don't kill the yeast), so that it ferments faster and I can determine the FG from there. This now gives me a good indication when the right time to bottle is and I have a measurement about my carbonation (ie I record the gravity when I bottle so I can adjust in the future). For a Hefe, when the FG is 1.010 (10 Oe) then I bottle it at 1.014 (14 Oe). Lagers would bottle at 1.012 (12 Oe) for eg...
Prost!