Prepare the Fruit Base: In a small mixing bowl, combine the mixed berries and fresh lemon juice. Using the back of a fork, gently press down on about half of the berries to release their natural juices. This creates a textured, jam-like compote without any cooking.
Infuse the Yogurt Cream: In a medium bowl, whisk together the non-fat Greek yogurt, chia seeds, maple syrup, vanilla extract, and ground cardamom. Whisk vigorously until the seeds are evenly distributed and the mixture is smooth.
Allow Seeds to Bloom: Let the yogurt mixture rest on the counter for about 5 minutes. This allows the chia seeds to begin absorbing the liquid, resulting in a thicker, creamier pudding consistency.
Layer the Parfaits: Divide the crushed berry compote evenly among three 12-ounce glass jars, creating a colorful bottom layer.
Add the Yogurt Layer: Spoon the thickened yogurt mixture carefully over the fruit base in each jar. Use the back of the spoon to spread it to the edges, sealing the fruit below.
Chill and Serve: Seal the jars with lids. Refrigerate for at least 20 minutes to allow the flavors to meld and the chia to fully soften. For the best texture, chill for 4 hours or overnight. Before serving, top each jar with ½ tablespoon of toasted almond slivers for crunch.