Keep in mind that the Crafting Tier of the particular recipe is important (see chart) in determining when your sign is due.
Note: You may not get a pop up when a sign is added to your gift box. Also, the game may need to "save" before it will appear in your gift box.
Thank you and I hope this will help assuage any confusion.
This may look a little complex but we’ll explain it more with this example:
Example: If you have a 1-star Bakery on your farm, the first recipes available to you were Pumpkin Bread, Strawberry Shortcake and Spicy Muffin. You can earn your first Mastery star in those three recipes once that you reach recipe level 20. If you upgrade your Bakery to 2-star, you unlock a new slew of recipes: Patty Pan Tart, Triple Berry Pie and Peanut Butter Cookie. For these recipes you need to reach recipe level 23 to get your first Mastery star.
In order to get a second Mastery star for Pumpkin Vinegar (which requires a 4-star Winery) you will need to raise your recipe level to 39.
Note: You may not get a pop up when a sign is added to your gift box. Also, the game may need to "save" before it will appear in your gift box.
Thank you and I hope this will help assuage any confusion.