Here is a list of guidelines to follow to create a summer kitchen that withstands the elements: 

• Choose a treatment product that is resistant to UV and rain to protect your summer kitchen. 
• Use soft wood such as white or red cedar or white pine, which is appropriate for this type of project.
• Make sure the wood is relatively dry so it can be treated quickly, but it is best to leave the wood bare for 4 to 6 weeks before treating it for better absorption of finishing products. 
• Avoid using wood for horizontal work surfaces and instead prefer stainless steel, ceramic, fiberglass, or other hard materials. 
• If you still choose to use wood for horizontal surfaces, protect it against food products (oil, mustard, ketchup, vinegar, etc.) and cooking grease. Use indoor finishing oils if your kitchen is sheltered from the elements, otherwise, prefer colored outdoor finishing oils. 
• Cover the furniture during periods when it is not in use for better protection against the elements. 
• Regularly clean the wooden surfaces to keep them clean and in good condition. 
• At the beginning of spring, inspect all wooden parts, clean them well, and apply a new layer of oil to prevent moisture or UV problems. It is important to note that these guidelines are general recommendations and it is best to consult the specific instructions of the treatment and finishing product you are using for optimal results.