This is my favorite soup growing up. Porcini mushrooms, prized in Russian cooking for their immense flavor, take center stage here. I've taken my family recipe and swapped out some onions for shallot's more mellow taste. I added some thyme to highlight the mushroom flavor even further, and finally, to give this already complex-tasting soup even more depth, I cooked some sherry into the mushrooms, letting the alcohol evaporate before adding other soup ingredients. It was my best version yet, one that I will share with my family and friends and be making for years to come. After some tweaks, my favorite soup is even better than before.