Allotments 4 All

Sorry, never tried to make sourdough bread. I do however have a recipe for "Herman the German" cake, which employs a similar principle.

Who makes it and how do you make it, Millions of chancers giving advice on the web, but most must be taken with a pinch of salt.  Our first effort needed a hacksaw to slice it and I expect it is negative calories judging on the effort needed to chew it

Did the garlic wrappers have purple stripes?  Did it flower and have bulbils in the top?  They say that Caulk White can have quite large cloves, but the other features should show a clear difference.

Caulk is a hardneck, so should have flowered and produced bulbils.  Elephant garlic also flowers but does not produce bulbils in its flower head.  And elephant garlic wrappers do not have purple stripes, they are white.  Elephant garlic when dug up, usually has small bulblets in a hard brown wrapper hanging off the bulb,  hardneck garlic does not have this at all.  Did you see bulblets when you dug the cloves?  You could not have missed them, they are so obvious. 

If you go by clove size alone, then it is quite possible that you have relatively few cloves in a bulb of a hardneck variety, but that these are bigger than the average softneck garlic.  Softneck garlics do not flower, but make more, smaller cloves.  What are the other characteristics of the garlic?

I do not think that they have changed species, but that with good fertile soil, you got maximum size bulbs possible for this variety, whereas what they sent for seed bulbs was probably smaller.    https://www.thegarlicfarm.co.uk/products/caulk-wight%C2%AE-seed

I couldn't grow them all, still catching up with last year's and the year before.  The Ambrosia Blue have just been outstanding, not so much blue as chocolate brown, after a 'blue' stage and such depth of flavour.  Ditto Ambrosia Rose UBX.  Yes Blaby always does well and tastes good too. 

Could you spell out for us how you know they’re a different species? I take it that they have a milder flavour and are very large. Are there any other diagnostic features?