Making yeast from fresh yeast

[PissPotPourri]

Hi. I have one block of fresh yeast left in the freezer and cannot get hold of any other yeast for love nor money. Does anyone know if I can make more yeast from what I have, or is it best starting from scratch? All I could find online was a method from scratch involving raisins, and one other about 'feeding' existing yeast with flour and water, but quantities are not clear.
Thank you in advance

Nudge

www.bbc.co.uk/food/recipes/sourdough_starter_22976

This might be helpful?

You could try the old dough/pate fermentee method - basically you reserve a decent size chunk of the dough to add to the next batch of dough as a pre-ferment. Much quicker to get started on the first batch than trying to get a sourdough starter going but you have to add time as a key ingredient when you’re actually making the dough!

www.thefreshloaf.com/node/55656/my-first-steps-beauty-pate-fermentee

Thank you. Think I'm going to go the sourdough starter route.