Really that character does not mean above. Maybe not on this pot...but here are some of the meanings of this character.
Maybe you should just go to the pot specialist in the first place...
上 【うえ】 (n,adj-no,n-adv,n-suf) (1) above; up; over; elder (e.g. daughter); (2) top; summit; (3) surface; on; (4) before; previous; (5) superiority; one's superior (i.e. one's elder); (6) on top of that; besides; what's more; (7) upon (further inspection, etc.); based on (and occurring after); (8) matters concerning...; as concerns ...; (9) (as ...上は) since (i.e. "for that reason"); (n-suf) (10) (hon) (See
父上) suffix indicating higher social standing; (11) (arch) place of one's superior (i.e. the throne); (12) (arch) emperor; sovereign; shogun; daimyo; (13) (arch) noblewoman (esp. the wife of a nobleman); (P)
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(1) お席の上の棚の中に入っております。It's in the overhead compartment.
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(2) この踏台を使えばクローゼットの上に手が届くよ。If you stand on this stool, you can reach the top of the closet.
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(3) 机の上にペンが何本ありますか。Are there any pens on the desk?
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(6) 寒かったうえに、風が強かった。It was cold, and, in addition, it was windy.
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(7) 彼らは合意の上で敏速な行動をとった。They acted immediately by agreement.
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上 【うわ】 (n,pref) upper; upward; outer; surface; top
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上 【かみ】 (n) (1) (ant:
下・しも .1) upper reaches (of a river); upper stream; (2) top; upper part; upper half (of the body); (3) long ago; (4) beginning; first; (5) (hon) (See
御上・1) person of high rank (e.g. the emperor); (6) government; imperial court; (7) (See
上方・かみがた) imperial capital (i.e. Kyoto); capital region (i.e. Kansai); region (or direction of) the imperial palace; (8) head (of a table); (9) (hon) wife; mistress (of a restaurant); (P)
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上 【じょう】 (n-suf) (1) from the standpoint of; as a matter of (e.g. fact); in the field of; being of the type of; (2) aboard (a ship or vehicle); on top of; on; above; (n) (3) (See
下・げ・2,
上巻) first volume (e.g. book); (n,pref) (4) superior quality; best; top; high class; (5) going up; (6) governmental; imperial; (7) presenting; showing; (pref) (8) ana- (medical, biol.);