Heat a large Dutch oven over medium-high heat, add 2 tablespoons olive oil and 1 1/2 pounds ground beef and cook and crumble until it begins to brown and is no longer pink.: The air will fill with a rich, meaty scent as the ground beef hits the hot oil; you should hear a steady sizzle that tells you the pan is properly heated. As the meat browns, it will release browned bits that stick to the pot, and those bits carry deep flavor into the stew, so resist the urge to rush. Use a wooden spoon or spatula to break the meat into small pieces, turning occasionally until there is no visible pink. If the pot looks wet, let the meat continue to brown so the moisture reduces and the Maillard reaction develops a richer aroma and darker color. A common mistake is overcrowding the pot, which causes the meat to steam rather than brown; if you notice a lot of liquid, briefly increase heat to evaporate excess moisture, then reduce before adding other ingredients.
Add 1 cup diced onion, 1 cup chopped carrots, 8 ounces sliced mushrooms, and 2 teaspoons minced garlic, and cook for 4-5 minutes until the vegetables begin to soften.: Right after adding the vegetables you will smell the onion and garlic waking up; the mushrooms will release a savory perfume and a little liquid. Keep the heat at medium high at first so you get a touch of color on the edges of the vegetables, then lower slightly if anything threatens to brown too fast. Stir frequently so the vegetables sweat evenly and the garlic does not burn, which would introduce bitterness. The carrots should start to yield but remain slightly firm, and the mushrooms will shrink as they release water. A frequent error here is adding garlic too early at high heat and letting it scorch; add the garlic toward the end of this brief sauté to preserve its sweet, garlicky aroma.
Add 2 tablespoons Worcestershire sauce, 1 tablespoon Italian seasoning, 1 (14.5-ounce) can diced tomatoes, 2 cups beef broth, 2 cups tomato juice, 2 cups chopped potatoes, 1 cup frozen corn, 1 cup frozen peas, and salt and pepper to taste. Bring to a simmer, then turn the heat to medium-low and cover. Simmer for 30-40 minutes, stirring occasionally until the potatoes are tender.: As you add the liquids and seasonings the pot will go quiet then begin to simmer as the flavors meld; the Worcestershire provides an umami lift and the Italian seasoning adds herbal warmth. Stir gently to incorporate the diced tomatoes and to make sure the potatoes are evenly distributed so they cook uniformly. When the tomato juice and broth meet the browned bits in the bottom of the pot, they will release even more aroma and deepen the color of the stew. Taste the liquid for seasoning but remember that flavors concentrate during simmering, so start modest with salt. A common pitfall is adding too much salt early; wait until the end of the simmer to adjust.
Bring to a simmer, then turn the heat to medium low and cover: You will see small bubbles rise to the surface as the stew comes to a simmer, and steam will begin to escape around the lid. Lowering to medium low ensures a gentle, even cook that softens the potatoes without breaking them down completely. Covering the pot traps steam and concentrates flavor, while preventing the liquid from evaporating too quickly. Check that the simmer is gentle; a vigorous boil can shatter tender vegetables and cloud the broth. One mistake is leaving the heat too high, which can over reduce the liquid before the vegetables are tender, leaving the stew too thick.
Simmer for 30 to 40 minutes, stirring occasionally until the potatoes are tender: During this long simmer the kitchen will fill with layered aromas from the beef , tomatoes , and herbs; the potatoes will soften and begin to absorb the broth, becoming creamy at their center. Stir every 8 to 10 minutes to prevent sticking and to check doneness; use a fork to test the largest potato cubes, which should yield without dissolving. If the stew reduces too much, add a splash of water or broth to loosen the consistency. A common issue is unevenly sized potato pieces; keep them similar in size so they finish cooking at the same time. Once tender, remove from heat and let the stew rest a few minutes before serving so flavors settle.