Translation:You are eating strawberries and chocolate.
French uses certain articles that usually aren't translated in English. They are du, de la, de l' and des.
du is used for masculin, singular words starting with a consonant, like chocolat.
de la is used for feminine, singular words starting with a consonant, like de la soupe.
de l' is used for words starting with a vowel or an h, regardless of word gender, like de l'hôtel and de l'eau.
des is used for all plural words, like des fraises.