Tastes like a raw potato.
I think the dipping sauce could/should be oil based. Olive oil. A little bit of roasted sesame seed oil, lime/lemon juice, but not much.
Seeds should not sprout, the fruit you buy is immature.
Can you buy Starfruit?
You buy them unripe. Green with a yellow tint. Good for ruining drinks.
Want some ripe ones? I got a tree full, bears fruit more or less constantly.
Boil down to starfruit sauce ( like apple sauce). Juice.
Let drop and rot. Mostly that!