What is the best hunting place to loot bunches of winterberries?

Question

Where is the best place to loot many winterberries for the Annual Autumn Vintage event?

Answer 1

Few options there:

Svargrond. 

Ironically most of the "icy" monsters drops Winterberries ( perhaps they collected their own stash for Mulled wine!) : Ice Witch, Winter Wolf, Penguins, Dire Penguins, Crystal Spiders, Frost Troll,  Frost Trolls, Frost Giantess, Frost Dragons and  Frost Hatchlings, polar bears & Bonelords ! 

Zao/ Farmine- Lizard High Guard, Lizard Legionist, Lizard Chosen, Killer Caiman, Lancer Bettles, Mutated Bats and Dragons 

Darashia: Dragons, Dragon lords, Hatchlings, Sandcrawlers

Laguna islands ( that I believe would be slow)- Tortiose, Thornback Tortoise, Azure and Orchid Frog

Fiehonja or Sunken Mines (IF mini world active)- Deepling Worker, Deeping Guard, Deepling Spellsinger, Deepling Scout 

Answer 2

I've tested in Svargrond (penguins, winter wolves and polar bears) and later in Okolnir (frost dragons) and I didn't like it. Then I went to Laguna Islands and liked it. I've made 2~3 winterberries per minute there (40 minutes to collect 100).

I'm a RP 400, so the tortoises dies very quickly. I've farmed the winterberries in the underground, killing the tortoises. I've tested in the Islands surface, killing tortoise + frogs, but I prefer the undergrounds.