I will do a clinical trial with one pot of yakult as a starter, the other will be local coconut vinegar. I will post the resultsOzexpat, you could try using raw milk from your goats as starters. That should contain some lactobacillius and other bacteria to get the fermentation going. Or the yogurt as mentioned. The sweet coconut drink you mention I am going to guess contains mostly wild yeasts favoring alcohol production, rather than lactic acid bacteria.