Here's the breakdown:
* Mane: Home
* Madhura: Sweet
* Karimbe: Jackfruit
* Onnu: One (in this context, it emphasizes the specialness of the event)
* Vannatte: Came, arrived
The phrase is a metaphorical expression used to describe a positive, joyful, or delightful event or arrival. It implies that something sweet, delicious, and satisfying has come into someone's life, like a ripe jackfruit bringing joy to a household.