Macarons are soft due to their delicate meringue-based structure. The combination of almond flour, powdered sugar, and egg whites creates a light and airy texture. The macarons are baked at a low temperature, allowing them to rise and form a smooth, soft exterior while remaining moist and chewy on the inside. The filling also adds moisture to the macaron, contributing to its overall softness. **

Macarons can crack for a few reasons, including overmixing the batter, undermixing the batter, or not allowing the macarons to rest before baking. Overmixing can cause the batter to become too runny, while undermixing can result in air bubbles that cause cracks. Allowing the macarons to rest before baking helps them develop a smooth, shiny surface. It's important to follow the recipe closely and practice to perfect the technique. **

Macarons become soft when they are stored in an airtight container at room temperature. The moisture from the filling seeps into the shells, making them soft and chewy. Additionally, macarons can also soften when they are left out in a humid environment for too long. It is important to store macarons properly to maintain their texture and flavor. **

Macarons are hollow inside because of the way they are made. The batter for macarons is whipped to incorporate air, which creates the hollow space inside the cookie as it bakes. Additionally, the meringue-based batter is piped onto the baking sheet in small rounds, which also contributes to the hollow center. This unique structure gives macarons their delicate and airy texture. **

Macarons can turn out flat for a few reasons. One common reason is overmixing the batter, which can cause the macarons to lose their structure and spread out too much during baking. Another reason could be underwhipping the egg whites, which can result in a weak meringue that doesn't provide enough lift to the macarons. Additionally, if the oven temperature is too low, the macarons may not rise properly and end up flat. It's important to follow the recipe closely and pay attention to the details of the macaron-making process to ensure they turn out with the desired height and texture. **

Macarons should have a delicate and slightly crisp outer shell, while the inside should be soft, chewy, and slightly moist. The ideal macaron strikes a balance between the two textures, with a smooth and creamy filling sandwiched between the two shells. A macaron that is too hard may be overbaked, while one that is too soft may be underbaked. Ultimately, the perfect macaron should have a combination of both soft and hard textures for the best eating experience. **

To freeze macarons whole, first ensure they are completely cooled and set. Place the macarons in a single layer on a baking sheet and place them in the freezer for about 1-2 hours until they are firm. Once they are frozen, transfer them to an airtight container or freezer bag, separating layers with parchment paper to prevent sticking. Label the container with the date and store in the freezer for up to 2-3 months. **

Macarons typically stay fresh for about 2-3 days if stored properly in an airtight container at room temperature. However, they can last up to a week if stored in the refrigerator. It is best to consume them within a few days of purchase to enjoy them at their best quality and flavor. **