For the sour macaroon here are some easy pinatas that you can romance.

1. The bark bark(have to eat bone and wear colar)
2. Cluckles (eat stuff)
3. Bunnycombs (eat carrots)
4. Wurmple (have dirt)
5. mousmellows (eat flower seeds)
6. Swannas (have fountain, have % of water)

* all includes having their houses

from,
a lvl 43 gardner