To make a sandwich in Grow a Garden, you need to go to the middle of the island and find the cooking pot. Then gather the sandwich ingredients, which include corn and tomato for the basic sandwich. Equip each ingredient and interact with the cooking pot to add them to the mix. Once all ingredients are added, press the Cook button to start cooking. After the food is prepared, you can take the finished sandwich from the pot and give it to the non-player character Chris P. Bacon if he is craving a sandwich. Some known sandwich ingredient combinations are:

• Rare Sandwich: 1 Corn, 2 Tomatoes
• Legendary Sandwich: 1 Corn, 1 Tomato, and either 1 Beanstalk or 1 Loquat

Cooking time varies by ingredient quality, with higher quality ingredients requiring longer cook time but offering better rewards. After cooking, equip the sandwich and speak to Chris P. to offer the sandwich. This cooking event is a timed feature where Chris P. Bacon craves different foods periodically, so make sure to prepare the sandwich when he is craving it to get rewards.