Ordered twice from this company. Great service. Have had 3 heirloom yoghurt cultures now. One I allowed to die out after over 9 months of constant use. The second one I didn’t use right away and I actually froze the freeze dried cultures for 18 months, never believed they would reactivate after all that time but they did! Just received my 3rd culture and have used it 10 times already. Absolutely fantastic to have fresh yoghurt a few times a week, I make it for my friends and family too. I like to make a big 2 litre batch and strain it overnight to make yoghurt of such a thickness that you would never see it in a store.