There's no reason to be afraid of eating fats—as long as they're the right fats.

Oleic acid, a compound in avocados' healthy monounsaturated fats (MUFAs), may trigger your body to actually quiet hunger. Stick to a quarter or a half of an avocado and watch that belly fat melt away. The creamy fruit is also packed with fiber and protein.

Try this recipe: Avocado, Lettuce, and Tomato Sandwiches

Related video: Avocado Toast, 4 Ways

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Take this tip straight to the supermarket.

Doctors and nutritionist alike sing the praises of the green fruit with a spreadable flesh as smooth as butter. Avocados are delicious, healthy and super trendy. Avocado toast is on menus coast to coast. But that toast doesn’t come cheap. Avocados are one of the pricier items in the produce aisle. You don’t want to buy 4 only to get home from the grocery and realize two aren’t ripe and will require the brown bag treatment for several days and that another is past its prime.

Have no fear. We are here with a trick to save you from wasting money when you have to throw the bad avocados out. The secret is in the stem. If you flick the stem and it comes off without any resistance or falls off in your hand, chances are, that avocado is too ripe and will be a mushy, brown mess inside.

But when you get the stem to pop off, check the color underneath. Once the stem is removed, there will be a little dimple and that dimple should most resemble the color of the inside of the avocado. So if that dimple is brown, chances are you’ll see a lot of brown spots when you slice it open. But if that little dimple is yellow-green in color, you probably have a winner! Be wary of the color being too yellow though, that will mean it’s not ripe yet.

WATCH: How to Make Avocado Pickles

Now check those stems and grab some tortilla chips at the store as well. You should be guacamole ready in no time!