Wash and prepare all vegetables, cutting them into pieces that are similar in size for even flavor and texture.
Place garlic cloves, dill sprigs, and peppercorns into clean glass jars before adding the vegetables.
Arrange the vegetables in layers, mixing colors and textures throughout each jar.
Heat vinegar, water, salt, and sugar together until the brine becomes clear and the seasonings dissolve.
Pour the warm pickling liquid into each jar until all vegetables are fully covered.
Allow the jars to cool completely before securing the lids and moving them into the refrigerator.
Let the pickle medley rest for at least one day before serving, although the flavor becomes even better after several days.