The sentence is missing two words, "will" and "a."
the corrected version would be:
In today’s blog post, I //will// teach you how to make //a// watermelon salad with feta and mint! With less than five ingredients, it’s a feast for the eyes and the palette.
The two errors are missing the verb "will" after the pronoun "I" at the beginning of the sentence, and there is missing the article "a", after the word "watermelon".
The correct phrase would be:
<em>"In today’s blog post, I </em><em>will </em><em>teach you how to make </em><em>a </em><em>watermelon salad with feta and mint! With less than five ingredients, it’s a feast for the eyes and the palette."</em>
