Where to get onion in Pokémon Scarlet and Violet?

Ultra Potato Salad Sandwich Potato salad, cucumber, red pepper, avocado, onion, mayonnaise Catching Power: Ghost Lv. 2
Encounter Power: Bug Lv. 2
Humungo Power: Dragon Lv. 2 Master Potato Salad Sandwich Sweet Herba Mystica, Mayonnaise, Potato Salad, Red Pepper, Red Onion, Cucumber Title Power: Ghost Lv. 2
Catching Power: Dragon Lv. 2
Encounter Power: Normal Lv. 2 Tasty sandwich Chili sauce, jalapeno, herb sausage, onion Humungo Power: Psychic Lv. 1
Adv. Point Power: Combat Lv. 1
Encounter Power: Water Lv. 1 Great savory sandwich Chili Sauce, Jalapeno, Herb Sausage, Sliced ​​Green Pepper, Onion Humungo Power: Psychic Lv. 2
Adv. Point Power: Combat Lv. 1
Encounter Power: Water Lv. 1 Ultra spicy sandwich Chili Sauce, Watercress, Jalapeno, Herb Sausage, Sliced ​​Green Pepper, Onion Humungo Power: Psychic Lv. 2
Adv Point Achievement: Floor Lv. 2
Encounter Power: Combat Lv. 1 Master Zesty Sandwich Sour Herba Mystica, Chili Sauce, Watercress, Jalapeno, Herb Sausage, Sliced ​​Green Pepper, Onion Title Power: Psychic Lv. 2
Teensy Power: Battle against Lv. 2
Encounter Power: Normal Lv. 2 egg sandwich Egg, Cucumber, Salt, Mayonnaise Encounter Power: Fly Lv. 1
Adv. Point Power: Steel Lv. 1
Raid Power: Rock Lv. 1 Great egg sandwich Egg, Cucumber, Red Onion, Salt, Mayonnaise Encounter Power: Fly Lv. 2
Adv. Point Power: Steel Lv. 1
Raid Power: Rock Lv. 1 Ultra Egg Sandwich Egg, Cucumber, Red Onion, Cheese, Salt, Mayonnaise Encounter Power: Fly Lv. 2
Adv. Point Power: Steel Lv. 2
Raid Power: Rock Lv. 1 Champion Egg Sandwich Salty Herba Mystica, Salt, Mayonnaise, Cheese, Egg, Red Onion, Cucumber Title Power: Fly Lv. 2
Encounter Power: Rock Lv. 2
Advanced Point Power: Normal Lv Hamburger Patty Sandwich Hamburger, onion, vinegar, pepper Humungo Power: Psychic Lv. 1
Encounter Power: Dragon Lv. 1
Catching Power: Steel Lv. 1 Great hamburger patty sandwich Vinegar, pepper, horseradish, hamburger, onion Humungo Power: Psychic Lv. 2
Encounter Power: Dragon Lv. 1
Catching Power: Steel Lv. 1 Ultra Hamburger Patty Sandwich Vinegar, Pepper, Watercress, Horseradish, Hamburger, Onion Humungo Power: Psychic Lv. 2
Encounter Power: Dragon Lv. 2
Catching Power: Steel Lv. 1 Master the hamburger patty sandwich Sweet Herba Mystica, Vinegar, Pepper, Watercress, Horseradish, Hamburger, Onion Title Power: Psychic Lv. 2
Raid Strength: Dragon Lv. 2
Encounter Power: Steel Lv. 2 Smokey sandwich Smoked fillet, watercress, vinegar, pepper, salt Advanced Point Power: Dark Lv. 1
Raid Strength: Dragon Lv. 1
Encounter Power: Psychic Lv. 1 Great smoky sandwich Smoked Filet, Watercress, Red Onion, Vinegar, Pepper, Salt Adv. Point Power: Spirit Lv. 1
Raid Power: Psychic Lv. 1
Encounter Power: Dark Lv. 1 Ultra smoky sandwich Smoked Filet, Watercress, Red Onion, Basil, Vinegar, Pepper, Salt Advanced Point Power: Dark Lv. 2
Raid Power: Psychic Lv. 2
Encounter Power: Ghost Lv. 1 Master Smokey Sandwich Salty Herba Mystica, Vinegar, Pepper, Salt, Basil, Watercress, Smoked Filet, Red Onion Title Strength: Dark Lv. 2
Advanced Point Power: Psychic Lv. 2
Raid Power: Ghost Lv Great vegetable sandwich Vinegar, Olive Oil, Salt, Sliced ​​Green Pepper, Red Onion, Cucumber, Tomato Encounter Power: Ghost Lv. 2
Teensy Power: Bug Lv. 1
Catch Power: Poison Lv. 1 Ultra veggie sandwich Vinegar, Olive Oil, Salt, Watercress, Sliced ​​Green Pepper, Red Onion, Cucumber, Tomato Encounter Power: Ghost Lv. 2
Teensy Power: Bug Lv. 2
Catch Power: Poison Lv. 1 Master vegetable sandwich Salty Herba Mystica, Vinegar, Olive Oil, Salt, Watercress, Sliced ​​Green Pepper, Red Onion Cucumber, Tomato Title Power: Ghost Lv. 2
Encounter Power: Bug Lv. 2
Catch Power: Poison Lv. Five Alert Sandwich Chorizo, onion, sliced ​​green pepper, mustard, ketchup, pepper Humungo Power: Poison Lv. 1
Advanced Point Power: Normal Lv. 1
Raid Strength: Dragon Lv. 1 Great five alarm sandwich Chorizo, onion, sliced ​​green pepper, basil, mustard, ketchup, pepper Humungo Power: Poison Lv. 2
Raid Power: Fire Lv. 1
Adv. Point Power: Dragon Lv. 1 Ultra Five Alarm Sandwich Chorizo, Onion, Sliced ​​Green Pepper, Basil, Jalapeno, Mustard, Ketchup, Pepper Humungo Power: Poison Lv. 2
Raid Power: Fire Lv. 2
Adv. Point Power: Dragon Lv. 1 Master the Five Alert Sandwich Spicy Herba Mystica, Pepper, Chili Sauce, Mustard, Basil, Jalapeno, Chorizo, Sliced ​​Green Pepper, Onion Title Power: Poison Lv. 2
Humungo Power: Dragon Lv. 2
Raid Power: Normal Lv. 2 Nouveau Veggie Sandwich Olive oil, watercress, wasabi, yellow pepper, onion, tomato Item Drop Power: Electric Lv. 1
Encounter Power: Fairy Lv. 1
Catching Power: Psychic Lv. 1 Great nouveau style veggie sandwich Olive Oil, Watercress, Wasabi, Yellow Bell Pepper, Onion, Cucumber, Tomato Item Drop Power: Electric Lv. 2
Encounter Power: Fairy Lv. 1
Catching Power: Psychic Lv. 1 Ultra Nouveau Veggie Sandwich Olive Oil, Mayonnaise, Watercress, Wasabi, Yellow Bell Pepper, Onion, Cucumber, Tomato Item Drop Power: Electric Lv. 2
Encounter Power: Fairy Lv. 2
Catching Power: Psychic Lv. 1 Master Nouveau Veggie Sandwich Sweet Herba Mystica, Olive Oil, Mayonnaise, Watercress, Wasabi, Yellow Bell Pepper, Onion, Cucumber, Tomato Item Drop Power: Electric Lv. 2
Encounter Power: Fairy Lv. 2
Catching Power: Psychic Ultra decadent sandwich Smoked Filet, Klawf Stick, Watercress, Basil, Tofu, Red Onion, Vinegar, Olive Oil, Salt Adv. Point Power: Spirit Lv. 2
Encounter Power: Dark Lv. 2
Catching Power: Ice Lv. 1 Master decadent sandwich Spicy Herba Mystica, Vinegar, Olive Oil, Salt, Basil, Watercress, Tofu, Smoked Filet, Klawf Stick, Red Onion Title Power: Ghost Lv. 2
Humungo Power: Dark Lv. 2
Encounter Power: Ice Lv. 2