Large Dutch Oven or Heavy Pot 5 to 6 quart size is ideal for sautéing and simmering without crowding; a soup pot works too, but a thick-bottomed pot helps prevent scorching when you add the spices
chef knife and cutting board sharp knife matters here because evenly diced vegetables cook at the same rate; a food processor can speed up chopping (pulse, do not puree)
measuring cup and measuring spoon use standard measuring tools so the spice balance stays steady; if you cook by feel, taste as you go and adjust the lemon and salt at the end
Wooden spoon or silicone spatula you want something that can scrape the bottom of the pot when blooming spices; a flat-edged spatula is great for deglazing
Immersion blender for partial blending right in the pot; if you do not have one, carefully ladle 2 cup of soup into a countertop blender and blend, then return it to the pot
microplane or fine grater (optional) for lemon zest; if you do not have one, peel thin strips with a vegetable peeler and mince them finely