For best flavor, allow the dip to rest longer—up to overnight—so the ranch, spices, and chiles fully infuse the creamy base, and be sure to drain tomatoes and corn very well to avoid a watery texture. You can easily customize the heat level by adding more or fewer jalapeños or swapping in mild canned green chiles, and you can make it slightly lighter by using light sour cream or Greek yogurt for part of the sour cream. Keep the dip chilled until serving, and avoid leaving it at room temperature for more than 2 hours for food safety. This dip travels well for parties when packed in a chilled container, and stirring just before serving helps re-emulsify any separated liquid and refresh the texture.