
Properly stored in an airtight container, tinginys will keep fresh in the refrigerator for 5–7 days. The butter and condensed milk solidify when chilled, maintaining the structure and flavor. After several days, the biscuits may begin to soften too much, which slightly changes the texture, but the dessert remains safe to eat. Based on my own testing, serving it within the first 4 days ensures the best balance of crunch and creaminess.
Yes, tinginys can be frozen successfully for up to 2 months. To freeze, wrap the loaf tightly in parchment paper and then place it in a freezer-safe bag or container to prevent freezer burn. Before serving, transfer it to the refrigerator to thaw slowly overnight. Freezing slightly changes the biscuit texture, making it a little softer, but the overall taste remains indulgent. This method is especially useful when preparing the dessert in advance for holidays or family gatherings.
A lactose-free tinginys can be prepared by substituting butter with lactose-free margarine or coconut oil and using a dairy-free sweetened condensed milk made from coconut or oat milk. The consistency will remain similar, though the flavor will have a subtle coconut note if coconut-based products are used. I have tested this version myself, and the dessert sets properly and maintains its characteristic mosaic look, making it an excellent choice for those with lactose intolerance.
If tinginys turns out too dry, it usually means the chocolate mixture did not have enough liquid or the biscuits were too finely crushed. To prevent this, make sure the cocoa, butter, and condensed milk mixture is smooth and slightly fluid before combining with the biscuits. Stir gently to coat every piece without reducing them to crumbs. From years of making this dessert, I recommend leaving some larger biscuit chunks, as they lock in moisture and provide that signature texture contrast.
The most common mistakes include crushing the biscuits into fine crumbs (which removes the texture), using poor-quality cocoa (which gives a dull flavor), and not allowing the dessert to chill long enough. Another frequent error is adding the hot chocolate mixture directly to the biscuits without letting it cool slightly, which can make them soggy. Through repeated testing, I learned that patience with cooling and chilling is crucial to achieve the right firmness and flavor balance.
To make tinginys softer, increase the amount of condensed milk slightly, which adds creaminess and moisture. For a firmer version, reduce the condensed milk or add extra biscuits. Texture also depends on chilling time: overnight chilling makes the dessert firm and easy to slice, while a shorter chill of 3–4 hours results in a softer, more mousse-like consistency. This flexibility allows you to adjust based on personal preference and serving occasion.