Let me walk you through the art of caviar production, since it's actually quite an interesting process once you understand the core mechanics. You'll want to start with catching sturgeon in the mountain lake during summer or winter (between 6am-7pm is ideal, and rainy summer days are particularly good for this). This is because sturgeons are the only fish that produce the high-value roe we're looking for.

Getting your fish pond set up is your next step, and this is where many people get confused. You'll need 200 stone, 5 seaweed, 5 green algae and 5000g for robin to build it - she takes two days, which gives you time to prepare your preserves jars. The real magic happens when you start completing the population quests, because each milestone unlocks more production potential. Starting with one sturgeon, you'll work your way through different requests (things like diamonds and omni geodes) until you reach the maximum of 10 fish, which is when your roe production really takes off.

Once you've got a full pond running, you're looking at a 75% chance of roe each day, which is pretty reliable income. The final step involves processing that roe in preserves jars (you can make these once you hit farming level 4 with 50 wood, 40 stone, and 8 coal). Here's something interesting - while the processing takes 4 days, setting up multiple ponds and jars creates a continuous production line. With the artisan profession, each piece of caviar sells for 700g instead of 500g, which makes this whole operation significantly more profitable in the long run. Think of it as setting up a luxury goods factory - the initial setup takes time, but the payoff is worth the effort.